Journal of physics. Condensed matter : an Institute of Physics journal最新文献_第6页

Tailoring Gilbert damping of ferromagnetic metals via heterostructure and alloy engineering. 通过异质结构和合金工程剪裁铁磁金属的吉尔伯特阻尼。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-30 DOI: 10.1088/1361-648X/aea9df

Shi-Bo Zhao, Yusheng Hou

{"title":"Tailoring Gilbert damping of ferromagnetic metals via heterostructure and alloy engineering.","authors":"Shi-Bo Zhao, Yusheng Hou","doi":"10.1088/1361-648X/aea9df","DOIUrl":"10.1088/1361-648X/aea9df","url":null,"abstract":"The Landau-Lifshitz-Gilbert (LLG) equation is the fundamental equation describing the temporal evolution of the magnetization vector of ferromagnets, which simultaneously incorporates the precessional motion around the effective field and the damping relaxation toward the equilibrium state for the magnetization vector. Gilbert damping, the phenomenological parameter governing energy dissipation in the LLG equation, is central to the performance of modern spintronic devices. Its manipulation through materials engineering has become a vibrant field of research, driven by the need for both ultra-low damping for energy-efficient operation and enhanced damping for fast magnetization switching. This topical review provides an overview of recent advances in tailoring Gilbert damping of ferromagnetic (FM) metals, focusing on two powerful strategies: heterostructure engineering and alloy engineering. In heterostructures, we first review how the FM layer thickness determines the Gilbert damping. We then discuss how the choice, thickness and electronic structure of adjacent nonmagnetic layers, including heavy metals, topological insulators, ferroelectrics and doped semiconductors, enable attractive damping phenomena. In alloy engineering, we survey low-doping and high-doping regimes, highlighting ultra-low damping values below 10-3in systems. Finally, we offer study perspectives on emerging directions of Gilbert damping, including the search for materials with intrinsic density-of-states valleys near the Fermi level, further exploration and research on anisotropic damping, and twist engineering in van der Waals heterostructures as a new degree of freedom for damping control. This review aims to provide understanding of the microscopic origins of Gilbert damping and to guide the rational design of low-loss, high-speed spintronic devices.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149003310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A machine-learning based approach to the evaluation of the critical scaling behavior of anisotropic spin systems. 基于机器学习的各向异性自旋系统临界尺度行为评估方法。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea9de

Alina A Chubarova, Ivan A Mamonov, Marina V Mamonova, Mikhail I Bogachev, Pavel V Prudnikov

引用次数: 0

Coupled structural collapse and evolution of magnetic phases in Sr(Co_0.88Ni_0.12)₂P₂under pressure. 压力下inSr(Co0.88Ni0.12) 2p2磁相的耦合结构崩塌与演化。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea95c

Brady Wilson, Shuyuan Huyan, Juan Schmidt, Aashish Sapkota, Dongzhou Zhang, Sergey L Bud'ko, Paul C Canfield, Wenli Bi

{"title":"Coupled structural collapse and evolution of magnetic phases in Sr(Co0.88Ni0.12)2P2under pressure.","authors":"Brady Wilson, Shuyuan Huyan, Juan Schmidt, Aashish Sapkota, Dongzhou Zhang, Sergey L Bud'ko, Paul C Canfield, Wenli Bi","doi":"10.1088/1361-648X/aea95c","DOIUrl":"10.1088/1361-648X/aea95c","url":null,"abstract":"We report high-pressure x-ray diffraction and electrical resistance measurements on Sr(CoNi)P, an itinerant antiferromagnet with the highest Néel temperature (= 36 K) among Sr(CoNi)Pseries. Room-temperature diffraction data reveal a pressure-induced transition from an uncollapsed tetragonal to a collapsed tetragonal (cT) structure, beginning near 8.4 GPa and completing before 12.4 GPa. This transition is characterized by an expansion of the in-plane-lattice parameter and a contraction in the-lattice parameter, resulting in a reduction of the axial ratio. Resistance measurements show a low-pressure anomaly near 38 K, consistent with the reported antiferromagnetic transition. As the room temperature value of the applied pressure exceeds 8 GPa, signs of a partial cT transition appear on cooling with the full cT transition occurring for pressures exceeding 10 GPa. The cT phase is accompanied by a much higher-temperature transport anomaly that resembles the pressure-induced ferromagnetic transition reported for SrCoP, reaching approximately 190 K before gradually decreasing at higher pressures. These results demonstrate strong coupling between the lattice collapse and magnetic behavior in Sr(CoNi)P.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148993634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric field influenced alignment of symmetrical lamellar diblock copolymers confined within polar discs. 电场影响极性圆盘内对称层状二嵌段共聚物的排列。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea67f

Usama Gulzar, Inayatullah Soomro, Muhammad Javed Iqbal

{"title":"Electric field influenced alignment of symmetrical lamellar diblock copolymers confined within polar discs.","authors":"Usama Gulzar, Inayatullah Soomro, Muhammad Javed Iqbal","doi":"10.1088/1361-648X/aea67f","DOIUrl":"10.1088/1361-648X/aea67f","url":null,"abstract":"Controlling the self-assembly of nanoscale morphologies by applying a surface field to diblock copolymers leads to potential applications in optics, sensors, nanolithography templates, and high-density media. In this paper, we predict the alignment behaviour of symmetric diblock copolymers confined in annular discs in response to an applied electric field. Investigations have focused on new trends in lamellar patterning that are influenced by variations in microphase separation, electric field strength, pore size, and disc inner radius. The cell dynamics simulation model is a discrete version of the time-dependent Ginzburg-Landau (Cahn-Hilliard-Cook) equation that captures the dynamic evolution of novel morphologies in curves, expressed in polar coordinates. The competition between electric-field-driven ordering and geometric confinement offers insight into controlling alignment in coherent lamellar morphology under local confinement. It is demonstrated that under confined domains, the electric field aligns the lamellar patterns into concentric and radial orientations associated with confinement domains. The competition between electric-field-driven ordering and geometric confinement provides insight into controlling alignment in coherent lamellar morphology under local confinement. The weak electric field is insufficient to overcome the frustration caused by thermal fluctuations and curvature. Excessively strong electric fields also drive the system into kinetically trapped metastable states with persistent defects. An intermediate electric field strength provides an optimal balance between defect relaxation and electrostatic driving, resulting in a defect-free, aligned lamellar morphology.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148946497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CORRIGENDUM: Electronic and vibrational properties of interstitial clusters in degenerately boron-doped silicon (2025J. Phys.: Condens. Matter 37 465901). 勘误：简并掺硼硅中间隙团簇的电子和振动特性（2025J）。理论物理。:提供者。物质37 465901)。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea9dd

K Dhamotharan, S Wang, S P Hayes, Q M Ramasse, L J Phillips, J D Major, G Zoppi, S J Clark, B G Mendis

引用次数: 0

Phase transitions in disordered altermagnetic Josephson junctions. 无序变磁约瑟夫逊结中的相变。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea9e4

Chang-An Li

引用次数: 0

Host-guest P₂C₉: a wide-band-gap two-dimensional semiconductor with appreciable electron mobility. 主客体P2C9：具有明显电子迁移率的宽带隙二维半导体。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-29 DOI: 10.1088/1361-648X/aea670

Jiaqi Liu, Sheng Wang, Meiling Xu, Guochun Yang

{"title":"Host-guest P2C9: a wide-band-gap two-dimensional semiconductor with appreciable electron mobility.","authors":"Jiaqi Liu, Sheng Wang, Meiling Xu, Guochun Yang","doi":"10.1088/1361-648X/aea670","DOIUrl":"10.1088/1361-648X/aea670","url":null,"abstract":"Two-dimensional wide-band-gap (2D WBG) semiconductors have attracted considerable interest due to their unique physical properties and potential applications. However, most existing 2D WBG semiconductors suffer from low carrier mobilities, which severely constrain their utility in electronic and optoelectronic devices. Inspired by the ultrahigh mobility arising from the delocalizedπ-electron network in graphene, we propose a design strategy that reconciles wide band gaps with efficient charge transport by confiningπelectrons into discrete C6rings embedded within a fullysp3-hybridized host framework. Following this concept, we successfully predict a P2C9monolayer featuring a direct band gap of 2.9 eV. Advanced carrier transport calculations, explicitly incorporating acoustic deformation potential, polar optical phonon, and ionized impurity scattering, yields an electron mobility of ∼153 cm2V-1s-1at an impurity concentration of 1010cm-2. Furthermore, excitonic calculations reveal a strongly bound exciton with a binding energy of 1.31 eV. These results demonstrate that the P2C9monolayer simultaneously achieves a WBG, appreciable mobility and robust excitonic effects, thereby establishingπ-bond isolation as the promising strategy for designing 2D WBG semiconductors.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148946529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid-state color-center quantum sensors: materials, engineering strategies, and machine learning-enabled advances. 固态色心量子传感器：材料、工程策略和机器学习支持的进展。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-28 DOI: 10.1088/1361-648X/aea72d

Hamdin Ozden, Birol Ozturk

{"title":"Solid-state color-center quantum sensors: materials, engineering strategies, and machine learning-enabled advances.","authors":"Hamdin Ozden, Birol Ozturk","doi":"10.1088/1361-648X/aea72d","DOIUrl":"10.1088/1361-648X/aea72d","url":null,"abstract":"Solid-state color-center spin defects provide a versatile platform for quantum sensing with applications ranging from nanoscale magnetometry to thermometry and electrometry. This review surveys recent progress in nitrogen-vacancy centers in diamond and defect spins in silicon carbide (SiC), with emphasis on their material properties, fabrication strategies, and coherence engineering. Key defect creation and optimization techniques, including ion implantation, femtosecond laser writing, focused ion beam nanofabrication, isotopic engineering, and surface passivation, are discussed in the context of improving spin coherence and optical performance. Fundamental quantum measurement protocols, optically detected magnetic resonance, Rabi oscillations, Ramsey interferometry, and spin echo, are reviewed as a hierarchical framework for characterizing spin control, dephasing, and intrinsic coherence. The review further highlights microscale sensing architectures and examines the growing role of machine learning in pulse optimization, adaptive estimation, and data-driven imaging. Finally, current challenges and future directions are outlined, focusing on scalability, environmental robustness, and autonomous operation. Together, these developments position diamond and SiC color centers as leading platforms for next-generation solid-state quantum sensors.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defect-stimulated amorphous track formation in SrTiO₃and KTaO₃-application of analytical thermal spike model. srtio3和KTaO3中缺陷激发的非晶径迹形成——分析热尖峰模型的应用。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-28 DOI: 10.1088/1361-648X/aeaa04

William J Weber, Gihan Velişa, Eva Zarkadoula, Alexandre Boulle, Aurélien Debelle, Yanwen Zhang

{"title":"Defect-stimulated amorphous track formation in SrTiO3and KTaO3-application of analytical thermal spike model.","authors":"William J Weber, Gihan Velişa, Eva Zarkadoula, Alexandre Boulle, Aurélien Debelle, Yanwen Zhang","doi":"10.1088/1361-648X/aeaa04","DOIUrl":"10.1088/1361-648X/aeaa04","url":null,"abstract":"Oxide perovskites exhibit fascinating properties that identify them as key materials for the next generation of multifunctional devices; however, their response to irradiation is complicated. In this work, pre-existing defects/disorder, introduced by ion irradiation, stimulate amorphous track formation at 300 K in single crystal SrTiO3and KTaO3irradiated with high-energy ions that have electronic stopping power,, above a threshold. The track cross-sections increase withand level of pre-existing disorder, and the threshold in electronic stopping power,, for track formation decreases with increasing disorder. In both pristine SrTiO3and KTaO3, temperatures exceeding the normal melt temperature are required to form stable amorphous tracks to offset the significant rate of radial recrystallization during quenching. Application of the analytical thermal spike model to the ion track formation behavior suggests that increasing the concentration of pre-existing defects causes an increase in efficiency for convertingto thermal energy (electron-phonon coupling) and a decrease in effective melt-quench temperature, which are confirmed by molecular dynamics simulations. This behavior is consistent with the high-level of strain and stored energy with increasing defect concentration that decreases the energy required to melt along the ion trajectory.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149003315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure-governed gas transport in hybrid membranes: Mechanisms, interfacial engineering, and pathways beyond traditional limits. 混合膜中微观结构控制的气体传输：机制、界面工程和超越传统限制的途径。

Journal of physics. Condensed matter : an Institute of Physics journal Pub Date : 2026-09-28 DOI: 10.1088/1361-648X/aead3c

Xiaomeng Zhao, Wei Wang, Jing Wang, Wenli Li, Ning Wu, Yongsheng Huang, Pengyuan Xie, Zhiwei Xu

{"title":"Microstructure-governed gas transport in hybrid membranes: Mechanisms, interfacial engineering, and pathways beyond traditional limits.","authors":"Xiaomeng Zhao, Wei Wang, Jing Wang, Wenli Li, Ning Wu, Yongsheng Huang, Pengyuan Xie, Zhiwei Xu","doi":"10.1088/1361-648X/aead3c","DOIUrl":"https://doi.org/10.1088/1361-648X/aead3c","url":null,"abstract":"Overcoming the traditional trade-off between permeability and selectivity in gas-separation membranes has been a central research objective, and the incorporation of inorganic materials into polymer matrices has emerged as a prominent and effective strategy. This work elucidates regulatory mechanisms from the microscale to macroscopic performance, highlighting the profound influence of inorganic materials on the microstructure and gas-transport properties of separation membranes. Firstly, the transport mechanisms of gas molecules within membranes are thoroughly analyzed, including the physicochemical foundations of core mechanisms such as Viscous Flow, Knudsen diffusion, surface diffusion, and dissolution-diffusion. Subsequently, based on the separation mechanisms and material structural characteristics, the design strategies and latest advancements in different material systems for gas separation membranes are discussed, with a focus on how microstructure regulates separation performance. Furthermore, the evaluation methods and challenges associated with key performance metrics of gas separation membranes, such as interfacial compatibility, mechanical strength, and long-term stability, are summarized. Finally, to address current bottlenecks in precise interfacial design, multicomponent competitive transport mechanisms, and scalable fabrication, future directions are outlined, emphasizing the use of cross-scale simulations and advanced characterization techniques to reveal underlying physical mechanisms and guide the rational design of next-generation high-performance separation membranes.","PeriodicalId":520686,"journal":{"name":"Journal of physics. Condensed matter : an Institute of Physics journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149077170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0