Article
Materials Science, Multidisciplinary
Umar Javed, Jamir Marino, Vadim Oganesyan, Michael Kolodrubetz
Summary: In this study, we investigate the dynamics of the one-dimensional Ising model in the presence of a static symmetry-breaking boundary field. We observe oscillatory correlations with power-law decay and discover a phase diagram of dynamical responses, which directly relates to changes in the number of edge modes as the boundary and bulk magnetic field are varied. We propose experimental setups, such as Rydberg chains, to demonstrate the universal physics.
Article
Physics, Multidisciplinary
Yuta Yahagi, Daisuke Miura, Akimasa Sakuma
Summary: Spin currents in ferromagnets have various functionalities. The extrinsic spin Hall effects of magnetic impurity scattering in ferromagnetic metals are evaluated. It is shown that spin-dependent scattering can generate a highly spin-polarized current perpendicular to the magnetization direction, and this mechanism dominates in the moderate-conductivity regime. The superposition of spin-conserving and spin-flip channels causes the spin currents. These findings suggest that optimizing alloy composition is an effective strategy for controlling the spin Hall effect.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2022)
Article
Materials Science, Multidisciplinary
Kang He, Jun Cheng, Man Yang, Yihui Zhang, Longqian Yu, Qi Liu, Liang Sun, Bingfeng Miao, Canming Hu, Haifeng Ding
Summary: Spin pumping is a widely used technique for generating pure spin current and studying spin-charge conversion. However, the rectified voltage from the planar Hall effect can complicate the analysis and lead to misleading results.
Article
Chemistry, Physical
Guangyi Jia, Wenxuan Xue, Zhenxin Jia, Mathias Schubert
Summary: Recently, researchers have shown great interest in the broken symmetry within crystals due to its potential in manipulating the propagation of photons. Low-symmetry Bravais crystals, such as monoclinic beta-Ga2O3, can support hyperbolic shear polaritons (HShPs) and hold promise for spinoptics. In this study, an Otto-type multilayer structure containing a KRS5 prism, a sensing medium, and monoclinic beta-Ga2O3 crystals is designed to enhance the photonic spin Hall effect (PSHE). By tuning the rotation angle of beta-Ga2O3, the spin Hall shifts can exhibit non-mirror-symmetric patterns. The findings provide valuable insights into the modulation of spin-orbit interactions of light through shear polaritons and their potential applications in photoelectronic devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Sara Catalano, Juan M. Gomez-Perez, M. Xochitl Aguilar-Pujol, Andrey Chuvilin, Marco Gobbi, Luis E. Hueso, Felix Casanova
Summary: Spin Hall magnetoresistance (SMR) is a reference tool used to investigate the magnetic properties of materials, but realistic surfaces may lead to unexpected artifacts in SMR due to defects and disorder. This study discovers that the SMR-like signal in heterostructures is generated by strong interfacial disorder, challenging the widespread assumption on the role of disorder in SMR measurements.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Multidisciplinary
Federico Carlini, Nicolas Cherroret
Summary: It has been discovered that the coherent mode of light propagating in transversely disordered media, known as coherent mode, exhibits an optical spin Hall effect (SHE). However, in non-resonant materials, this phenomenon appears at a larger spatial scale than the mean free path, making it challenging to observe due to the exponential attenuation of the coherent mode. In this study, we demonstrate that in disordered photonic arrays with Mie resonances, the SHE appears at a smaller scale than the mean free path if operated near the lowest transverse-magnetic resonance of the array. With weak measurement and cooperative emission, a giant SHE that can be observed in optically-thin media is achieved. Additionally, a time-dependent SHE observable at large optical thicknesses can be achieved by exploiting the cooperative emission of a flash of light following the abrupt extinction of the incoming beam.
Article
Multidisciplinary Sciences
Cheng Chi, Qiao Jiang, Zhixin Liu, Liheng Zheng, Meiling Jiang, Han Zhang, Feng Lin, Bo Shen, Zheyu Fang
Summary: The study demonstrates selective manipulation of photon spin angular momentum at a deep subwavelength scale via electron-induced OSHE in Au nanoantennas, suggesting an information encoding scheme with robustness, privacy, and high level of integration for future quantum applications.
Article
Optics
Zhihao Chen, Shuai Lin, Jiahao Hong, Lijuan Sheng, Yu Chen, Xinxing Zhou
Summary: This work presents a simple and effective method for enhancing the photonic spin Hall effect via singularity induced by destructive interference in an ultrathin uniaxial slab. By adjusting the thickness of the slab, the destructive interference and the Brewster effect can act together to significantly increase the maximum transverse spin shift. This research provides insights into the influence of interference effects on photonic spin Hall effect in layered media, offering a straightforward approach to achieve enhanced photonic SHE.
Article
Chemistry, Multidisciplinary
Rongxin Li, Xiaojuan Yuan, Huayao Tu, Zhenhua Zhang, Yanxiang Luo, Qian Chen, Shangkun Li, Shiheng Liang, Yong Liu, Zhihong Lu, Zhongming Zeng, Rui Xiong
Summary: Spin-orbit-torque (SOT) offers a highly attractive perspective for manipulating magnetization dynamics in magnetic nanostructures. The efficiency of SOT-induced switching of ultrahard ferromagnets is still a challenge. In this study, SOT is reported in chemically disordered Fe0.5Pt0.5 and Pt/Fe0.5Pt0.5 bilayer materials, with high efficiency and enhanced spin Hall conductivity (SHC). The Pt/Fe0.5Pt0.5 interface further enhances SHC due to interfacial symmetry breaking, enabling partial magnetization switching in an ultra-hard exchange-spring system with a low current.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Physics, Applied
Guonan Feng, Xi Chen, Di Fu, Jintao Liu, Xinyan Yang, Guanghua Yu
Summary: The efficiency of the spin-Hall spin-orbit torque (SOT) can be enhanced by introducing ruthenium impurities into the Co layer, particularly in the damping-like component; however, the impact on the field-like component is minimal. Modulating spin scattering inside ferromagnets with carefully selected impurities shows promise for constructing low-power-dissipation SOT spintronic devices.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Lin Huang, Yongjian Zhou, Hongsong Qiu, Hua Bai, Chong Chen, Weichao Yu, Liyang Liao, Tingwen Guo, Feng Pan, Biaobing Jin, Cheng Song
Summary: The inverse spin Hall effect (ISHE) has been investigated in Mn2Au/[Co/Pd] heterostructures, showing that the direction of the Neel vector has a significant impact on the ISHE signal. This finding not only expands the study of the Hall effect, but also enhances the flexibility of antiferromagnetic spintronics.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xinbing Jiao, Zhi Li, Wenwen Liu, Lumeng Li, Fengning Sun, Siran Ma
Summary: The study focused on the polarization properties of a linearly polarized laser beam reflected from garnet/Au and Ta/Nd2Fe14B/Ta/garnet/Au surfaces under external magnetic and direct current electric fields. Different distributions of magnetic domains in various garnet films were observed, with the errors in the Stokes parameter S1 used for characterization. The trends in S1 with changes in magnetic and electric fields differed between the garnet/Au and Ta/Nd2Fe14B/Ta/garnet/Au samples.
Article
Materials Science, Multidisciplinary
Kang He, Jun Cheng, Man Yang, Liang Sun, Wei Sun, Subhankar Bedanta, Antonio Azevedo, Bingfeng Miao, Haifeng Ding
Summary: This study presents a systematic investigation of spin rectification effect (SRE) in Co40Fe40B20 and Ni microstrips. The SREs from different physical mechanisms are quantitatively decomposed using a symmetry consideration and supported by angular-dependent analyses. The study provides a comprehensive understanding of SREs in ferromagnetic metal microstrips, which is beneficial for quantitative analyses in microwave-related studies in spintronics.
Article
Chemistry, Multidisciplinary
Enda Hua, Liang Si, Kunjie Dai, Qing Wang, Huan Ye, Kuan Liu, Jinfeng Zhang, Jingdi Lu, Kai Chen, Feng Jin, Lingfei Wang, Wenbin Wu
Summary: The study finds that Ru doping can enhance the anomalous Hall effect at room temperature in transition-metal-oxide heterostructures. The competition between ferromagnetic double-exchange interaction and antiferromagnetic superexchange interaction due to Ru doping leads to spin frustration and spin-glass state, significantly enhancing the extrinsic anomalous Hall effect.
ADVANCED MATERIALS
(2022)
Article
Physics, Applied
Qi Liu, Y. Zhang, L. Sun, Bingfeng Miao, X. R. Wang, H. F. Ding
Summary: In this study, we introduce a method to quantitatively determine the spin pumping-induced inverse spin Hall effect (SP-ISHE) voltage using the ST-FMR signal in the Py(Ni80Fe20)/Pt bilayer. The SP-ISHE voltage is found to have an opposite sign to the symmetric component of the ST-FMR voltage. After correction, the efficiency of both damping-like and field-like torques in the Py/Pt bilayer is further estimated based on Py thickness-dependent measurements.
APPLIED PHYSICS LETTERS
(2021)
