Article
Materials Science, Multidisciplinary
Haoshen Ye, Lisha Liu, Dongmei Bai, G. P. Zhang, Junting Zhang, Jianli Wang
Summary: In this study, the spin valve effect in the TiCr2N4 monolayer was investigated using density functional theory and Boltzmann transport theory. The results showed that the TiCr2N4 monolayer retains a ferromagnetic ground state above room temperature, and its electrical transport property is strongly dependent on the angle of magnetization direction. The large difference in conductivity between the TiCr2N4 monolayers with parallel and anti-parallel magnetization leads to giant magnetoresistance.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Meng Zhao, Yifan Zhao, Yaojin Li, Guohua Dong, Zhexi He, Yujing Du, Yuxuan Jiang, Shaoyuan Wu, Chenying Wang, Libo Zhao, Zhuangde Jiang, Ming Liu, Ziyao Zhou
Summary: It has been discovered that natural light can modulate spin waves in Co60Al40-alloyed film, enabling reversible switching behavior. This work has significant implications for the development of future sunlight-tunable magnonics/spintronics devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Meng Zhao, Yifan Zhao, Yaojin Li, Guohua Dong, Zhexi He, Yujing Du, Yuxuan Jiang, Shaoyuan Wu, Chenying Wang, Libo Zhao, Zhuangde Jiang, Ming Liu, Ziyao Zhou
Summary: This study investigates the tunability of spin waves in Co60Al40-alloyed film with natural light. The results show that the critical angle and ferromagnetic resonance field can be shifted under illumination, leading to changes in magnetic anisotropy. The control of spin-wave resonance by sunlight can be understood by the effective photoelectron-doping-induced change of the surface magnetic anisotropy. The study demonstrates the potential of developing sunlight-tunable magnonics/spintronics devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shanquan Chen, Jhong-Yi Chang, Qinghua Zhang, Qiuyue Li, Ting Lin, Fanqi Meng, Haoliang Huang, Yangyang Si, Shengwei Zeng, Xinmao Yin, My Ngoc Duong, Yalin Lu, Lang Chen, Er-Jia Guo, Hanghui Chen, Chun-Fu Chang, Chang-Yang Kuo, Zuhuang Chen
Summary: The spin state of Co ions in epitaxial LaCoO3 thin films under tensile strain has been determined to have mixed high-spin and low-spin states, while it is practically a low-spin state under compressive strain. The identification of this spin state ratio explains the origin of ferromagnetism in LaCoO3 films. This study highlights the importance of spin state degrees of freedom and thin-film strain engineering in creating new physical properties that do not exist in bulk materials.
Article
Chemistry, Multidisciplinary
Emanuele Longo, Matteo Belli, Mario Alia, Martino Rimoldi, Raimondo Cecchini, Massimo Longo, Claudia Wiemer, Lorenzo Locatelli, Polychronis Tsipas, Athanasios Dimoulas, Gianluca Gubbiotti, Marco Fanciulli, Roberto Mantovan
Summary: Research on spin-charge interconversion at the interface between magnetic materials and topological insulators has shown an enhanced charge current in Sb2Te3 TIs structures. The results indicate a potential for future technology development with a 250% increase in spin pumping efficiency in this structure.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jing Zhou, Xinyu Shu, Weinan Lin, Ding Fu Shao, Shaohai Chen, Liang Liu, Ping Yang, Evgeny Y. Tsymbal, Jingsheng Chen
Summary: The study systematically investigated the SOT generated by three different crystal structures of SrRuO3, revealing a correlation between the intrinsic SOT efficiency of SrRuO3 and epitaxial strain and octahedral rotation. This work offers new possibilities for tuning SOT and integrating the properties of perovskite oxides with spintronic functionalities.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Xinwei Feng, Yangping Wang, Jing Meng, Haoyu Lin, Xiaoyan Zhu, Yali Xie, Dongmei Jiang, Yang Xu, Tian Shang, Qingfeng Zhan
Summary: We report variable in-plane fourfold magnetic anisotropy in epitaxial exchange-biased Fe/IrMn bilayers with different layer thicknesses. The fourfold magnetic anisotropy of the bilayers continuously decreases and even appears negative as the thickness of the Fe layer decreases. As the IrMn thickness increases, the fourfold magnetic anisotropy of the bilayers decreases rapidly from a value close to the intrinsic magnetocrystalline anisotropy of Fe and then gradually reaches saturation. The extrinsic fourfold magnetic anisotropy depends on the amount of the induced uncompensated IrMn spins near the edge of antiferromagnetic domains.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Haoshen Ye, Yijie Zhu, Dongmei Bai, Junting Zhang, Xiaoshan Wu, Jianli Wang
Summary: Nitride-based van der Waals magnetic heterostructures can effectively utilize charge and spin degrees of electrons, with GaN/VN heterostructure showing 100% spin polarization. The magnetic properties of these heterostructures depend on the orbital occupations and configurations, making them promising for spin valve devices.
Article
Physics, Multidisciplinary
Hassan Al-Hamdo, Tobias Wagner, Yaryna Lytvynenko, Gutenberg Kendzo, Sonka Reimers, Moritz Ruhwedel, Misbah Yaqoob, Vitaliy I. Vasyuchka, Philipp Pirro, Jairo Sinova, Mathias Klaeui, Martin Jourdan, Olena Gomonay, Mathias Weiler
Summary: We investigated the magnetization dynamics of Mn2Au/Py thin film bilayers and found two resonant modes that are attributed to the coupling between Py and Mn2Au.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Chunlei Li, Yaojin Li, Yifan Zhao, Yujing Du, Meng Zhao, Wanjun Peng, Yangyang Wu, Ming Liu, Ziyao Zhou
Summary: This study demonstrates a ferromagnetic/photovoltaic heterojunction that exhibits controllable magnetic dynamics under visible light illumination, offering a new approach for the development of fast, small, and energy-efficient spintronics applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Physics, Applied
Amit Chauhan, B. R. K. Nanda
Summary: 5d transition metal oxides, especially iridates, exhibit novel electronic and magnetic phases due to the interplay between U and SOC. Reduced dimensionality in ultrathin films of SrIrO3 can increase functionality, with confinement-induced localization leading to large MAE. Tailored terminations in weak correlation limit can create multiple Dirac states, rare in correlated oxides, leading to unique transport properties.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Janeth Alexandra Garcia-Monge, Arturo A. Ayon
Summary: Stress-dependent micromagnetic modeling based on the Landau-Lifshitz-Gilbert equations reveals the significant relationship between uniaxial stress in ferromagnetic thin films and pumped spin current density, influencing the static and dynamic magnetization. The ability to dynamically modulate the pumped spin current density through stress-mediated magnetoelectric coupling is anticipated to benefit various spintronic applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Angus Huang, Horng-Tay Jeng, Ching-Hao Chang
Summary: The magnetic anisotropy in SrRuO3 (SRO) ultrathin films can be controlled by thickness or electrical modulations, with the easy axis direction depending on the film thickness, gate voltage, and substrate. This tunable large magnetic anisotropy in SRO ultrathin films provides an excellent route toward advanced spintronic devices.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Mingguo Li, Baozeng Zhou
Summary: The CrSBr/BP van der Waals heterostructure improves the ferromagnetic coupling and increases the Curie temperature to 198K by applying tensile strain along the a-axis. The heterostructure maintains its semiconductor properties and easy magnetization direction, and exhibits high hole mobility. These findings provide new strategies for improving the ferromagnetic stability of 2D semiconductors and promote further research.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zhibo Zhao, Arun Kumar Jaiswal, Di Wang, Vanessa Wollersen, Zhengyu Xiao, Gajanan Pradhan, Federica Celegato, Paola Tiberto, Maria Szymczak, Juliusz Dabrowa, Moaz Waqar, Dirk Fuchs, Xiaoqing Pan, Horst Hahn, Robert Kruk, Abhishek Sarkar
Summary: High entropy oxides (HEOs) provide the possibility to explore new oxide compositions and properties by incorporating multiple-principal cations. This study demonstrates that epitaxial strain can selectively stabilize certain magneto-electronic states in HEOs. The coexistence of rocksalt and spinel-HEO phases in epitaxial (Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)(3)O-4 thin films is revealed, with changes in magnetic anisotropy and domain structure under different strain states.
Article
Physics, Applied
Ravinder Kumar, Z. Hossain, R. C. Budhani
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Ravinder Kumar, B. Samantaray, Shubhankar Das, Kishori Lal, D. Samal, Z. Hossain
Summary: We report a strong enhancement of damping in yttrium iron garnet (YIG) film due to spin inhomogeneity at the interface. This is caused by the antiferromagnetic exchange coupling between a thin interfacial gadolinium iron garnet (GdIG) layer, induced by growth, and the top YIG layer. The large inhomogeneous distribution of the effective magnetization in the YIG film results in enhanced precessional damping.
Article
Materials Science, Multidisciplinary
Ravinder Kumar, S. N. Sarangi, D. Samal, Z. Hossain
Summary: Evidence of unprecedented room temperature positive exchange bias and hysteresis loop inversion has been found in monolithic Y3Fe5O12 films grown epitaxially on a (111)-oriented Gd3Fe5O12 crystal. The growth-induced interfacial layer coupling leads to positive EB and in-turn loop inversion, with a large exchange shift realized at 300 K. This discovery may have significant implications for spintronics device applications.
