Applied Physics Letters最新文献_第4页

Reference-free computational holographic imaging based on non-zero frequency single-pixel detection 基于非零频率单像素检测的无参考计算全息成像

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0330820

Jie Yuan, Yupeng Wang, Zhaoxian Zhang, Binglin Chen, Yan Guo, Mengyu Xie, Baoqing Sun

引用次数: 0

Supervised cryo-EM tomography denoising enabled by physics-based image simulation 由基于物理的图像模拟实现监督冷冻电镜断层成像去噪

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0313245

Yeaeun Kim, Yongsoo Yang

引用次数: 0

Role of CoFeB/Pt stacking order on interfacial Dzyaloshinskii–Moriya interaction driven spin-wave asymmetry CoFeB/Pt层序对界面Dzyaloshinskii-Moriya相互作用驱动的自旋波不对称性的影响

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0313160

Ambarish Kumar, J. Scott, M. S. Devapriya, Nair S. Adithya, Adekunle Olusola Adeyeye, Arabinda Haldar

{"title":"Role of CoFeB/Pt stacking order on interfacial Dzyaloshinskii–Moriya interaction driven spin-wave asymmetry","authors":"Ambarish Kumar, J. Scott, M. S. Devapriya, Nair S. Adithya, Adekunle Olusola Adeyeye, Arabinda Haldar","doi":"10.1063/5.0313160","DOIUrl":"https://doi.org/10.1063/5.0313160","url":null,"abstract":"The interfacial Dzyaloshinskii–Moriya interaction (iDMI) plays a vital role in stabilizing chiral magnetic textures and enabling nonreciprocal spin-wave propagation, both of which are essential for the development of next-generation spintronic devices. Controlling iDMI through material design and interface engineering is therefore important for achieving more energy-efficient information technologies. CoFeB/Pt heterostructures are particularly versatile due to their adjustable magnetic and spin–orbit properties. In this study, we examine how stacking sequence, interface quality, and magnetic moment density influence iDMI in CoFeB/Pt thin films using magnetometry and Brillouin light scattering. We find that changing the layer order, creating symmetric stacks, or inserting spacer layers significantly alters spin-wave nonreciprocity. Notably, the frequency shift when CoFeB is deposited on top of Pt is more than twice, and the iDMI constant is almost four times higher than that when Pt is on top of the CoFeB; the effects related to ferromagnet thickness and moment density confirm that the origin is at the interface. These findings offer practical insights into interface engineering for tunable chiral spin dynamics in ultrathin magnetic films.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"1 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

All-optical ultrafast tunable linear absorption with a VO2 based metamaterial 基于VO2的超材料的全光超快可调线性吸收

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0322835

Yael Gutiérrez, Saúl Vázquez-Miranda, Mateusz Rebarz, Shirly Espinoza, Helmut Karl, José M. Saiz, Sebastien Cueff

引用次数: 0

Altermagnetic-RuO2-based all-magnetic tunnel junction: Giant and multistate tunneling magnetoresistances with perfect spin filtering 基于altermagnetic - ruo2的全磁隧道结：具有完美自旋滤波的巨态和多态隧道磁电阻

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0329569

Long Zhang, Yi Yan, Xuehao Wu, Sikander Azam, Guoying Gao

{"title":"Altermagnetic-RuO2-based all-magnetic tunnel junction: Giant and multistate tunneling magnetoresistances with perfect spin filtering","authors":"Long Zhang, Yi Yan, Xuehao Wu, Sikander Azam, Guoying Gao","doi":"10.1063/5.0329569","DOIUrl":"https://doi.org/10.1063/5.0329569","url":null,"abstract":"Altermagnets generate momentum-dependent spin-polarized currents without net magnetization, offering an intriguing platform for spintronic applications. However, altermagnet-based tunneling devices often possess limited magnetoresistance tunability or rely on conventional, highly spin-polarized ferromagnetic (FM) electrodes with stray fields. Here, we propose an all-magnetic tunnel junction paradigm by integrating experiment-feasible altermagnetic (AM) RuO2 electrodes with a FM/antiferromagnetic (AFM) CrOCl barrier. Utilizing density functional theory combined with the non-equilibrium Green's function methods, we demonstrate that the RuO2/CrOCl/RuO2 junction achieves multistate, nonvolatile spin transport through synergistic and antagonistic magnetization alignments between the AM source and the FM/AFM barrier. Remarkably, this design yields an exceptionally high tunneling magnetoresistance (TMR) of 1.8 × 105% and perfect spin filtering efficiency of ∼100%. The TMR is broadly tunable from 42% to 504% with a monolayer barrier and from 1% to ∼105% with a bilayer barrier. The resistance-area products from 0.74 × 10−3–4.5 × 10−3 Ω μm2 (monolayer) to 3.1 × 10−3–5.7 Ω μm2 (bilayer) lie within the practical range for magnetic memory applications. Our work establishes the fusion of AM electrodes with FM/AFM barriers as a feasible strategy to unlock multiple controllability and get rid of FM electrodes, opening avenues for high-performance multi-bit memory and reconfigurable logic devices.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"25 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148287807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hillock formation on high-temperature annealed AlN templates due to dislocation nucleation at AlON particles 高温退火AlN模板上由于AlON粒子位错成核而形成的丘状

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0329728

A. Lachowski, T. Remmele, A. Kwasniewski, C. Hartmann, M. Żak, J. Smalc-Koziorowska, M. Petkovic, M. Albrecht, T. Schulz

引用次数: 0

Interplay of ferromagnetic and antiferromagnetic interactions in epitaxial Co3ZnN 外延Co3ZnN中铁磁和反铁磁相互作用的相互作用

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0325854

Sita Dugu, Sharad Mahatara, Corlyn E. Regier, James R. Neilson, Stephan Lany, Rebecca W. Smaha, Sage R. Bauers

{"title":"Interplay of ferromagnetic and antiferromagnetic interactions in epitaxial Co3ZnN","authors":"Sita Dugu, Sharad Mahatara, Corlyn E. Regier, James R. Neilson, Stephan Lany, Rebecca W. Smaha, Sage R. Bauers","doi":"10.1063/5.0325854","DOIUrl":"https://doi.org/10.1063/5.0325854","url":null,"abstract":"Antiperovskite nitrides with the general formula M3AN have attracted significant attention due to their tunable electronic and magnetic properties. Among them are many cobalt-based compounds predicted to exhibit high thermodynamic stability and intriguing magnetic behavior. Here, we report the synthesis and magnetic characterization of epitaxial Co3ZnN thin films grown by radio frequency sputtering on SrTiO3 (STO) and MgO substrates. X-ray diffraction confirms phase-pure (00l)-oriented films with cube-on-cube epitaxy on STO, with a c-lattice parameter of 3.752 Å. Magnetic measurements reveal clear hysteresis at 2 K with a coercive field of ∼0.11 T and a small net moment of 0.108 μB/f.u., suggesting either a canted antiferromagnetic (AFM) or ferrimagnetic (FiM) configuration. Temperature-dependent magnetization measurements show a transition near 25 K, with strong AFM interactions with Curie–Weiss temperature (Θ) = −80.13 K. Complementary density functional theory and Monte Carlo simulations indicate a ferromagnetic (FM) ground state, with the FM–AFM energy difference decreasing systematically with increasing supercell size, consistent with competition between FM and AFM/FiM interactions. These results highlight Co3ZnN as a magnetically complex antiperovskite nitride with competing exchange interactions.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"40 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148287568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observation of two-dimensional hole gas distribution and transport in GaN composite p-channel at cryogenic temperatures 低温下氮化镓复合材料p通道中二维空穴气体分布和输运的观察

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0328558

Hao Zhang, Yifang Zhang, Chi Wang, Haoran Tao, Junchen Huang, Yat Hon Ng, Tao Chen, Amgad A. Al-Saman, Zheyang Zheng

{"title":"Observation of two-dimensional hole gas distribution and transport in GaN composite p-channel at cryogenic temperatures","authors":"Hao Zhang, Yifang Zhang, Chi Wang, Haoran Tao, Junchen Huang, Yat Hon Ng, Tao Chen, Amgad A. Al-Saman, Zheyang Zheng","doi":"10.1063/5.0328558","DOIUrl":"https://doi.org/10.1063/5.0328558","url":null,"abstract":"The density of two-dimensional hole gas (2DHG) in gallium nitride (GaN)-based heterojunctions with strong polarization effects is generally considered to be temperature-independent. In this work, we observed that the hole transport in the GaN 2D/3D composite p-channel, which is preferred for GaN complementary devices and circuit integration, exhibits unconventional temperature dependence. At cryogenic temperatures, three distinct regions can be clearly observed. For T &gt; 200 K, the measured hole density decreases exponentially with decreasing temperature due to the freeze-out of the bulk p-GaN. For 70 &lt; T &lt; 200 K, the hole transport is dominated by the 2DHG, and the hole sheet density shows weak temperature dependence. For T &lt; 70 K, a spurious increase in the hole density occurs due to the increased significance of the defect-band conduction. This work reveals that the 2DHG density continues to decrease as a result of the variation of the Fermi level in the bulk p-GaN, which is restricted by compensation doping. Increasing the 2DHG density with higher modulation doping concentration in the barrier layer can weaken the temperature dependence of the 2DHG density and preserve the functionality of devices made thereon at cryogenic temperatures.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"47 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148287809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sign reversal of twofold angle-dependent magnetoresistance in Pt/Mn4N bilayers Pt/Mn4N双层中双角相关磁电阻的符号反转

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0326825

Rongze Qin, Xiaoman Song, Bo Xu, Xiaohui Wang, Liying Wang, Fan Yang, Xiang Liu, Dongxing Zheng, Chao Jin, Haili Bai

引用次数: 0

Enhanced near-infrared emission in Na2ZnSiO4:Fe3+ via lattice engineering toward highly sensitive fluorescence lifetime thermometry 通过晶格工程增强Na2ZnSiO4:Fe3+的近红外发射，用于高灵敏度荧光寿命测温

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-05-20 DOI: 10.1063/5.0324643

Zhenwei Jia, Shiwei Lu, Pinshu Lv, Xinyi Jiang, Jing Meng, Jiaqi Wang, Mengdi Yue, Li Wu, Yongfa Kong, Jingjun Xu

{"title":"Enhanced near-infrared emission in Na2ZnSiO4:Fe3+ via lattice engineering toward highly sensitive fluorescence lifetime thermometry","authors":"Zhenwei Jia, Shiwei Lu, Pinshu Lv, Xinyi Jiang, Jing Meng, Jiaqi Wang, Mengdi Yue, Li Wu, Yongfa Kong, Jingjun Xu","doi":"10.1063/5.0324643","DOIUrl":"https://doi.org/10.1063/5.0324643","url":null,"abstract":"Fe3+-activated near-infrared luminescent materials are gaining interest for applications in night vision, bioimaging, and food analysis. Although Fe3+ is often considered a luminescence quencher, proper control can make it an efficient activator. In this study, a novel Na2Zn0.7Mg0.3SiO4:0.003Fe3+ (NZMS:0.003Fe3+) phosphor was synthesized by substituting Mg2+ for Zn2+ in the Na2ZnSiO4 host. Upon 280 nm excitation, NZMS:0.003Fe3+ exhibits a broad emission band centered at 720 nm. The substitution of Zn2+ with Mg2+ induces lattice distortion and lowers the local symmetry of Fe3+ centers, resulting in a 6.4-fold enhancement in photoluminescence intensity at the optimal concentration (x = 0.3). The optimized NZMS:0.003Fe3+ phosphor shows high thermal sensitivity in the 300–362 K range, with a maximum relative sensitivity of 3.40% K−1 at 357 K. Based on this, a fiber-optic system for fluorescence lifetime thermometry was designed. Its high sensitivity and robust lifetime-based detection show great potential for minimally invasive biomedical procedures and printed circuit board monitoring. This work provides a strategy for enhancing Fe3+ luminescence and explores new applications for Fe3+-doped phosphors.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"90 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148287566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0