Advanced Physics Research最新文献

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Superconducting Nanowire Detection of Neutral Atoms and Molecules via Their Internal and Kinetic Energy in the eV Range (Adv. Phys. Res. 2/2025) 在eV范围内利用超导纳米线检测中性原子和分子的内能和动能[j]。研究》2/2025)
IF 2.8
Advanced Physics Research Pub Date : 2025-02-10 DOI: 10.1002/apxr.202570005
M. Strauß, R. Gourgues, M. F. X. Mauser, L. Kulman, M. Castaneda, A. Fognini, A. Shayeghi, P. Geyer, M. Arndt
{"title":"Superconducting Nanowire Detection of Neutral Atoms and Molecules via Their Internal and Kinetic Energy in the eV Range (Adv. Phys. Res. 2/2025)","authors":"M. Strauß,&nbsp;R. Gourgues,&nbsp;M. F. X. Mauser,&nbsp;L. Kulman,&nbsp;M. Castaneda,&nbsp;A. Fognini,&nbsp;A. Shayeghi,&nbsp;P. Geyer,&nbsp;M. Arndt","doi":"10.1002/apxr.202570005","DOIUrl":"10.1002/apxr.202570005","url":null,"abstract":"<p><b>Superconducting nanowires</b></p><p>In article number 2400133, Markus Arndt and co-workers show superconducting nanowires to be a powerful tool for detecting the impact of neutral metastable atoms and neutral molecules at low energy. They achieve remarkable detection efficiencies, responding sensitively to internal electronic energies as low as 11.6 eV and impact energies as small as 3 eV. Their performance in detecting neutral molecules exceeds that of channel electron multipliers by more than 106, opening new opportunities for measurements in atomic and molecular beam physics. \u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202570005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical Manipulation of Intervalley Trions in Twisted MoSe2 Homobilayers at Room Temperature 室温下扭曲MoSe2均匀层中谷间Trions的电操纵
IF 2.8
Advanced Physics Research Pub Date : 2025-02-09 DOI: 10.1002/apxr.202400135
Bárbara L. T. Rosa, Paulo E. Faria Junior, Alisson R. Cadore, Yuhui Yang, Aris Koulas-Simos, Chirag C. Palekar, Seth Ariel Tongay, Jaroslav Fabian, Stephan Reitzenstein
{"title":"Electrical Manipulation of Intervalley Trions in Twisted MoSe2 Homobilayers at Room Temperature","authors":"Bárbara L. T. Rosa,&nbsp;Paulo E. Faria Junior,&nbsp;Alisson R. Cadore,&nbsp;Yuhui Yang,&nbsp;Aris Koulas-Simos,&nbsp;Chirag C. Palekar,&nbsp;Seth Ariel Tongay,&nbsp;Jaroslav Fabian,&nbsp;Stephan Reitzenstein","doi":"10.1002/apxr.202400135","DOIUrl":"10.1002/apxr.202400135","url":null,"abstract":"<p>The impressive physics and applications of intra- and interlayer excitons in a transition metal dichalcogenide twisted-bilayer make these systems compelling platforms for exploring the manipulation of their optoelectronic properties through electrical fields. This work studies the electrical control of excitonic complexes in twisted MoSe<sub>2</sub> homobilayer devices at room temperature. Gate-dependent micro-photoluminescence spectroscopy reveals an energy tunability of several meVs originating from the emission of excitonic complexes. Furthermore, this study investigates the twist-angle dependence of valley properties by fabricating devices with stacking angles of θ ∼ 1°, θ ∼ 4° and θ ∼ 18°. Strengthened by density functional theory calculations, the results suggest that, depending on the twist angle, the conduction band minima and hybridized states at the <b>Q</b>-point promote the formation of intervalley hybrid trions involving the <b>Q</b>-and <b>K</b>-points in the conduction band and the <b>K</b>-point in the valence band. By revealing the gate control of exciton species in twisted homobilayers, these findings open new avenues for engineering multifunctional optoelectronic devices based on ultrathin semiconducting systems.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Orientation-Dependent Upper Critical Magnetic Field and Density of State for Uranium Ditelluride 二碲化铀的定向上临界磁场和态密度
IF 2.8
Advanced Physics Research Pub Date : 2025-02-09 DOI: 10.1002/apxr.202400202
Habtamu Anagaw Muluneh
{"title":"Orientation-Dependent Upper Critical Magnetic Field and Density of State for Uranium Ditelluride","authors":"Habtamu Anagaw Muluneh","doi":"10.1002/apxr.202400202","DOIUrl":"10.1002/apxr.202400202","url":null,"abstract":"<p>The superconductor UTe<sub>2</sub> has garnered considerable attention due to its unique spin-triplet pairing and high upper critical magnetic field, making it a promising candidate for exploring unconventional superconductivity. This study presents a theoretical investigation into the angle dependence of the upper critical magnetic field H<sub>C2</sub> and the temperature-dependent density of states (DOS) within UTe<sub>2</sub>. By employing anisotropic Ginzburg–Landau theory alongside microscopic modeling, the orientation-dependent behavior of H<sub>C2</sub> is analyzed along key crystallographic axes, particularly the a-, b- and c-axes, which demonstrate critical fields of ≈7, 15, and 11 T respectively. These results indicate a strong anisotropy in H<sub>C2</sub>, with a peak along the b-axis, suggesting a profound alignment effect of the spin-triplet pairs with the magnetic field. Additionally, temperature-dependent DOS calculations reveal a pronounced increase in states near the Fermi level at lower temperatures, supporting the presence of unconventional pairing with potential nodal gaps. These findings suggest a complex interplay between spin fluctuations and electronic correlations, contributing to the robust superconducting phase in UTe<sub>2</sub> and also provides deeper insights into the mechanisms driving superconductivity in UTe<sub>2</sub> and highlights its potential for applications requiring high-field superconductors.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in 2D Materials for Infrared Photodetection: Synthesis, Heterostructures, and Device Innovations 二维红外光探测材料的研究进展:合成、异质结构和器件创新
IF 2.8
Advanced Physics Research Pub Date : 2025-02-09 DOI: 10.1002/apxr.202400199
Mingjia Jiang, Denan Kong, Minghao Zhang, He Lan, Qingmei Hu, Yao Zhou, Jiadong Zhou
{"title":"Advances in 2D Materials for Infrared Photodetection: Synthesis, Heterostructures, and Device Innovations","authors":"Mingjia Jiang,&nbsp;Denan Kong,&nbsp;Minghao Zhang,&nbsp;He Lan,&nbsp;Qingmei Hu,&nbsp;Yao Zhou,&nbsp;Jiadong Zhou","doi":"10.1002/apxr.202400199","DOIUrl":"10.1002/apxr.202400199","url":null,"abstract":"<p>Two-dimensional (2D) materials have emerged as transformative candidates for infrared photodetection, showcasing exceptional properties such as high carrier mobility, tunable bandgaps, and strong light-matter interactions. Despite their potential, challenges remain in achieving broadband spectral responses (e.g., ultraviolet to far-infrared), minimizing dark currents (&lt;10<sup>−10</sup> A), and maximizing on/off ratios (&gt;10<sup>3</sup>). This review explores recent advancements in synthesis techniques, intrinsic material properties, and the design of innovative heterostructures to address these issues. Key topics include van der Waals heterostructures, photodetection mechanisms, and mixed-dimensional device architectures. Additionally, challenges in scalable fabrication are highlighted and artificial intelligence driven material discovery is proposed as a pathway toward practical applications in commercial infrared detection.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Progress in Chemical Vapor Deposition of 2D Magnetic Materials 二维磁性材料化学气相沉积研究进展
IF 2.8
Advanced Physics Research Pub Date : 2025-02-05 DOI: 10.1002/apxr.202400169
Shuyang Yuan, Yanchang Zhou, Lei Yin, Xintian Wang, Sheng Jiang, Ziyi Song, Yao Wen, Ruiqing Cheng, Jun He
{"title":"Recent Progress in Chemical Vapor Deposition of 2D Magnetic Materials","authors":"Shuyang Yuan,&nbsp;Yanchang Zhou,&nbsp;Lei Yin,&nbsp;Xintian Wang,&nbsp;Sheng Jiang,&nbsp;Ziyi Song,&nbsp;Yao Wen,&nbsp;Ruiqing Cheng,&nbsp;Jun He","doi":"10.1002/apxr.202400169","DOIUrl":"10.1002/apxr.202400169","url":null,"abstract":"<p>Magnetic 2D materials have gotten significant attention due to their unique low-dimensional magnetism and potential applications in advanced spintronics, providing an perfect platform for investigating magnetic properties at the 2D limit. The chemical vapor deposition (CVD), known for its simplicity and strong controllability, has become a key technique for fabricating ultrathin magnetic nanosheets. This article systematically reviews recent advancements in CVD-grown magnetic 2D materials, focusing on the effects of growth parameters on material morphologies and properties, and analyzing the construction of heterostructures and their role in magnetic regulation. In addition, various magnetic characterization methods are introduced, and potential applications of these materials in spintronic devices are discussed. By summarizing current challenges, the article provides insights into future research directions, emphasizing the need to improve material stability, Curie temperature, and scalable synthesis to enable practical applications of 2D magnetic materials.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bioelectronics with Topological Crosslinked Networks for Tactile Perception 生物电子学与触觉感知的拓扑交联网络
IF 2.8
Advanced Physics Research Pub Date : 2025-02-04 DOI: 10.1002/apxr.202400165
Mingqi Ding, Pengshan Xie, Johnny C. Ho
{"title":"Bioelectronics with Topological Crosslinked Networks for Tactile Perception","authors":"Mingqi Ding,&nbsp;Pengshan Xie,&nbsp;Johnny C. Ho","doi":"10.1002/apxr.202400165","DOIUrl":"10.1002/apxr.202400165","url":null,"abstract":"<p>Bioelectronics, which integrate biological systems with electronic components, have attracted significant attention in developing biomimetic materials and advanced hardware architectures to enable novel information-processing systems, sensors, and actuators. However, the rigidity of conjugated molecular systems and the lack of reconfigurability in static crosslinked structures pose significant challenges for flexible sensing applications. Topological crosslinked networks (TCNs) featuring dynamic molecular interactions offer enhanced molecular flexibility and environmentally induced reconfigurability, decoupling the competition between performances. Here, recent advances are summarized in assembly methods of bioelectronics with different TCNs and elaborate ion/electron-transport mechanisms from the perspective of molecular interactions. Decoupling effects can be achieved by comparing distinct TCNs and their respective properties, and an outlook is provided on a new range of neuromorphic hardware with biocompatibility, self-healing, self-powered, and multimodal-sensing capabilities. The development of TCN-based bioelectronics can significantly impact the fields of artificial neuromorphic perception devices, networks, and systems.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamically Encircling Multiple Exceptional Points in Waveguides System: Asymmetric–symmetric Multimode Switching 动态包围波导系统中的多个异常点:非对称-对称多模开关
IF 2.8
Advanced Physics Research Pub Date : 2025-02-02 DOI: 10.1002/apxr.202400078
Xiaoxiao Wang, Huixin Qi, Yandong Li, Xiaoyong Hu, Xingyuan Wang, Qihuang Gong
{"title":"Dynamically Encircling Multiple Exceptional Points in Waveguides System: Asymmetric–symmetric Multimode Switching","authors":"Xiaoxiao Wang,&nbsp;Huixin Qi,&nbsp;Yandong Li,&nbsp;Xiaoyong Hu,&nbsp;Xingyuan Wang,&nbsp;Qihuang Gong","doi":"10.1002/apxr.202400078","DOIUrl":"10.1002/apxr.202400078","url":null,"abstract":"<p>Dynamically encircling exceptional points in non-Hermitian systems leads to counterintuitive chiral mode conversions, which provides a new platform for implementing information processing. Previous research has shown that the position of the starting point determines whether the dynamics are chiral or non-chiral. Photonic devices that simultaneously realize chiral and non-chiral mode converters are yet to be investigated. In this letter, a four-state non-Hermitian waveguide array with two exceptional points is presented and the dynamical encirclement of each exceptional point and double exceptional points, which possess chiral and non-chiral dynamics is studied. Encircling a single exceptional point and both exceptional points gives the same outcome but a different encircling process. During non-chiral dynamics, the initial states are not on the Riemann sheet that forms the EPs, encircling both exceptional points produces more branch cuts than encircling a single exceptional point. An asymmetric–symmetric multimode switch at telecommunication wavelengths is demonstrated. Chiral mode converter and non-chiral mode converter can be implemented simultaneously on one photonic device. The research enriches the exploration of the physics associated with multiple exceptional points in non-Hermitian multistate systems and inspires wide applications in on-chip optical systems.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topological Physics: From Fundamentals to Applications 拓扑物理学:从基础到应用
IF 2.8
Advanced Physics Research Pub Date : 2025-01-30 DOI: 10.1002/apxr.202400196
Gang Zhang, Xiaotian Wang, Huan Wang
{"title":"Topological Physics: From Fundamentals to Applications","authors":"Gang Zhang,&nbsp;Xiaotian Wang,&nbsp;Huan Wang","doi":"10.1002/apxr.202400196","DOIUrl":"10.1002/apxr.202400196","url":null,"abstract":"&lt;p&gt;With recent breakthroughs from fundamentals to applications in topological physics, it should provide a snapshot of the state-of-the-art, both experimental and theoretical, for both experienced and young researchers interested in this subject area. The Special Issue on “Topological Physics: From Fundamentals to Applications” edited by Xiaotian Wang, and Gang Zhang, provides an overview of progress beyond the state of the art for a diverse range of ongoing scientific and technological efforts toward to the forecasting and engineering of the properties of topological physics, opening up exciting opportunities for the prediction, design, fabrication, functionalization, and integration of new and emerging research on topological materials.&lt;/p&gt;&lt;p&gt;The topological singularity of the scalar field of a microwave supercavity system, excited adjacent to the avoided mode crossing, was observed. Zahra Manzoor et al. [apxr.202200052] experimentally demonstrated that optimizing the high-index dielectric resonator (HIR) dimensions along with a multipolar composition of the strongly coupled excitation source enabled a more compact supercavity system with a higher quality factor.&lt;/p&gt;&lt;p&gt;Topological magnonics has received a great deal of attention in the past decade owing to its fundamental significance and potential applications. This review provided a comprehensive overview of recent research progress on topological phases of magnons, including Chern insulators, high-order topological insulators, Z2 topological insulators, and topological semimetals of magnons. Additionally, candidate materials and artificial structures suitable for hosting topological magnons were summarized by Fengjun Zhuo et al. [apxr.202300054].&lt;/p&gt;&lt;p&gt;In the van der Waals heterostructures Gr/CrI&lt;sub&gt;3&lt;/sub&gt;, the spin-polarized density of graphene exhibited a non-monotonic change with electric field due to the unstable charge distribution. Jun-Tong Ren et al. [apxr.202300026] reported that when the interface distance was compressed, the enhanced interaction between graphene and CrI&lt;sub&gt;3&lt;/sub&gt; stabilized the charge distribution, and the quantum anomalous Hall gap was tuned from 6 to 22 meV.&lt;/p&gt;&lt;p&gt;Shandite with Ni&lt;sub&gt;3&lt;/sub&gt;Pb&lt;sub&gt;2&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt; chemical formula and &lt;span&gt;&lt;/span&gt;&lt;math&gt;&lt;/math&gt; symmetry contains the kagome sublattice formed by transition metal atoms. Surajit Basak et al. [apxr.202300025] theoretically investigated the dynamical properties of &lt;i&gt;T&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt;Pb&lt;sub&gt;2&lt;/sub&gt;&lt;i&gt;Ch&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt; (&lt;i&gt;T&lt;/i&gt; = Pd,Pt, and &lt;i&gt;Ch&lt;/i&gt; = S,Se) with a shandite structure. The studied compounds realized the phonon Dirac nodal points and lines, phonon surface states, while Pt&lt;sub&gt;3&lt;/sub&gt;Pb&lt;sub&gt;2&lt;/sub&gt;S&lt;sub&gt;2&lt;/sub&gt; was unstable and exhibited the structural phase transition from &lt;span&gt;&lt;/span&gt;&lt;math&gt;&lt;/math&gt; to &lt;span&gt;&lt;/span&gt;&lt;math&gt;&lt;/math&gt;.&lt;/p&gt;&lt;p&gt;Topological spintronics was presented without spin-orbit interaction by Muhammad Nadeem et al. [apxr.202300028], where topological switching of ","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400196","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic-Field Induced Charge Accumulation in Scalable Magnetoelectric PVDF-TrFE/Ni Composite Devices 可伸缩磁电PVDF-TrFE/Ni复合器件中的磁场感应电荷积累
IF 2.8
Advanced Physics Research Pub Date : 2025-01-29 DOI: 10.1002/apxr.202400158
Federica Luciano, Erika Giorgione, Emma Van Meirvenne, Andrei Galan, Ilaria Marzorati, Arne De Coster, Dominika Wysocka, Bart Sorée, Stefan De Gendt, Florin Ciubotaru, Christoph Adelmann
{"title":"Magnetic-Field Induced Charge Accumulation in Scalable Magnetoelectric PVDF-TrFE/Ni Composite Devices","authors":"Federica Luciano,&nbsp;Erika Giorgione,&nbsp;Emma Van Meirvenne,&nbsp;Andrei Galan,&nbsp;Ilaria Marzorati,&nbsp;Arne De Coster,&nbsp;Dominika Wysocka,&nbsp;Bart Sorée,&nbsp;Stefan De Gendt,&nbsp;Florin Ciubotaru,&nbsp;Christoph Adelmann","doi":"10.1002/apxr.202400158","DOIUrl":"10.1002/apxr.202400158","url":null,"abstract":"<p>This study investigates the direct magnetoelectric effect in thin film composites comprising a 550 nm thick poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) layer spin-coated onto a 500 µm thick Ni foil substrate. Direct measurements of charge accumulation on dot capacitors with Au top electrodes, induced by the rotation of Ni magnetization from in-plane to out-of-plane orientation by an applied magnetic field, reveal pronounced magnetoelectric coupling. Polarization differences between in-plane and out-of-plane magnetization states of up to (13.8 ± 0.8) × 10<sup>−4</sup> µC cm<sup>−2</sup> are derived from charge measurements. This corresponds to a maximum open circuit voltage difference of up to 75 ± 6 mV and a magnetoelectric coupling coefficient with respect to magnetization changes of 310 ± 27 mVA<sup>−1</sup>. Finite element simulations using COMSOL Multiphysics corroborate experimental findings, indicating near-independence of generated polarizations and open circuit voltages when lateral capacitor dimensions are reduced into the nanometer range. Simulations of nanoscale pillar devices on rigid substrates, employing materials with optimized piezoelectric and magnetostrictive parameters, predict the potential for generating large open circuit voltage differences exceeding 2 V, highlighting the prospects of such devices for spintronic applications.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 6","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multifunctionality of Single-Atom-Thick 2D Magnetic Atoms in Nanolaminated M2AX: Toward Permanent Magnets and Topological Properties 纳米层合M2AX中单原子厚二维磁性原子的多功能性:朝向永磁体和拓扑性质
IF 2.8
Advanced Physics Research Pub Date : 2025-01-28 DOI: 10.1002/apxr.202400181
Chen Shen, Fu Li, Yixuan Zhang, Ruiwen Xie, Ilias Samathrakis, Bing Han, Hongbin Zhang
{"title":"Multifunctionality of Single-Atom-Thick 2D Magnetic Atoms in Nanolaminated M2AX: Toward Permanent Magnets and Topological Properties","authors":"Chen Shen,&nbsp;Fu Li,&nbsp;Yixuan Zhang,&nbsp;Ruiwen Xie,&nbsp;Ilias Samathrakis,&nbsp;Bing Han,&nbsp;Hongbin Zhang","doi":"10.1002/apxr.202400181","DOIUrl":"10.1002/apxr.202400181","url":null,"abstract":"<p>M<sub>(<i>n</i> + 1)</sub>AX<sub><i>n</i></sub> (MAX) phases' nanolaminated ternary carbides or nitrides possess a unique crystal structure in which single-atom-thick <b>A</b> sublayers are interleaved by alternative stacking of an M<sub>(<i>n</i> + 1)</sub>X<sub><i>n</i></sub> sublayer; these materials have been investigated as promising functional materials for industrial applications because of their laminated structure, as well as their metallic and ceramic properties. Based on high-throughput density functional theory calculations, the stabilities and magnetic properties of M<sub>2</sub>AX phases with A as magnetic elements (A = V, Cr, Mn, Fe, Co, and Ni) are investigated, aiming for designing new multifunctional magnets. The thermodynamical stabilities and the relative stability trend are first evaluated, resulting in 139 unreported metastable compounds, 39 of which are carbon-based M<sub>2</sub>AX compounds. After this, the mechanical stability and properties of metastable phases are analyzed. To determine the magnetic ground states of the newly predicted compounds, the magnetic exchange coupling parameters are further calculated, with the critical magnetic transition temperature evaluated based on the mean-field theory. Particularly, several compounds such as Be<sub>2</sub>FeN, Be<sub>2</sub>CoN, and Fe<sub>2</sub>FeN show high Curie temperature over 1000 K. Subsequently, the absolute value of magneto-crystalline anisotropy energy (MAE) is calculated, and 20 compounds are found with a uniaxial anisotropy greater than 0.4 MJ m<sup>−3</sup>, which are potential gap magnets. Finally, the transport properties of the predicted ferromagnetic (FM) M<sub>2</sub>AX compounds are evaluated. Notably, Y<sub>2</sub>FeN possesses an anomalous Hall conductivity (AHC) and anomalous Nernst conductivity (ANC) (at 300 K) of around –1158 S cm<sup>−1</sup> and –4.59 A mK<sup>−1</sup>. Particularly, when considering carbon doping in Ta<sub>2</sub>FeN, the AHC and ANC are significantly enhanced, which also offers an effective tuning strategy for spintronics applications.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 6","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400181","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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