Article
Nanoscience & Nanotechnology
Steve Novakov, Bhakti Jariwala, Nguyen M. Vu, Azimkhan Kozhakhmetov, Joshua A. Robinson, John T. Heron
Summary: Enhanced spin transfer torques from Rashba spin current can be achieved by inserting WSe2 in heterostructures of ferromagnets and transition metal dichalcogenides, without altering the interface polarization.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Tianhui Li, Wei Jia, Tenghua Gao, Satoshi Haku, Zhixiang Ye, Mingxia Qiu, Hongyu An
Summary: This study investigates the generation of spin-orbit torques (SOTs) and the spin Hall effect in oxidized platinum/magnetic oxide heterostructures. The results show that the SOT efficiency drastically decreases with an increase in the oxidation level of Pt(O). Additionally, it is demonstrated that the spin Hall conductivity of Pt is highly sensitive to the electric conductivity.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Nozomi Soya, Hiroki Hayashi, Takashi Harumoto, Tenghua Gao, Satoshi Haku, Kazuya Ando
Summary: The study shows that enhancing the resistivity of the Pt layer by nitrogen incorporation can increase the spin Hall effect, confirming that the variation of the intrinsic spin Hall effect is dominated by the change in scattering time.
Article
Materials Science, Multidisciplinary
Ye Du, Saburo Takahashi, Junsaku Nitta
Summary: The experimentally obtained spin current related magnetoresistance in epitaxial Pt/Co bilayers was analyzed using a drift-diffusion model incorporating both bulk spin Hall effect and interfacial Rashba-Edelstein effect. The analysis showed a temperature-independent Rashba parameter and an effective interfacial REE thickness at the Pt/Co interface, indicating the need to consider both bulk and interface charge-spin current interconversions in highly conductive magnetic heterostructures.
Article
Multidisciplinary Sciences
Shuai Hu, Ding-Fu Shao, Huanglin Yang, Chang Pan, Zhenxiao Fu, Meng Tang, Yumeng Yang, Weijia Fan, Shiming Zhou, Evgeny Y. Tsymbal, Xuepeng Qiu
Summary: Deterministic and field-free switching is demonstrated in a Ni/Co multilayer by exploiting the magnetic spin Hall effect in adjacent Mn3Sn, which is essential for low-power spintronics.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
Wenxing Lv, Hongwei Xue, Jialin Cai, Qian Chen, Baoshun Zhang, Zongzhi Zhang, Zhongming Zeng
Summary: Recent studies have shown that two-dimensional transition metal dichalcogenides have the potential to generate strong spin-orbit torques for manipulating magnetic devices. In WTe2/ferromagnet structures, an enhancement of spin-orbit torque efficiency is observed with increasing WTe2 thickness, potentially due to spin absorption at the WTe2/Ta interface and the spin Hall effect.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Ruiyue Chu, Bin Cui, Liang Liu, Weikang Liu, Tingting Miao, Xue Ren, Bin Cheng, Xiangxiang Zhao, Xinyi Wu, Shuyun Wu, Jifan Hu
Summary: Reversible and non-volatile control of critical current and spin Hall efficiency was achieved in TaN/W/Pt/Co/Pt/TaN heterostructures through ionic liquid gating-induced hydrogen ion adsorption and desorption. Thinning of Pt and TaN capping layers enabled oxygen ion migration towards the Co layer, resulting in exchange bias field and field-free magnetization switching for Boolean logic operation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Yihong Fan, Zach Cresswell, Silu Guo, Delin Zhang, Thomas J. Peterson, Jinming Liu, Yang Lv, K. Andre Mkhoyan, Jian-Ping Wang
Summary: In this study, a large USMR value was observed in sputtered amorphous PtSn4/CoFeB bilayers, which is 50% larger than reported values from heavy metals. This finding provides an alternative pathway for USMR application in two-terminal SOT devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Utkarsh Shashank, Yoji Nakamura, Yu Kusaba, Takafumi Tomoda, Razia Nongjai, Asokan Kandasami, Rohit Medwal, Rajdeep Singh Rawat, Hironori Asada, Surbhi Gupta, Yasuhiro Fukuma
Summary: Recent studies have shown that incorporating nonmetallic lighter elements into 5d transition metals can enhance the efficiency of dampinglike torque. This finding is important for the development of low-power and robust magnetic memory.
Article
Physics, Multidisciplinary
Qiao-Hua Li, Peng-Bin He, Meng-Qiu Cai, Zai-Dong Li
Summary: This study systematically investigates the stationary and precessional states in a uniaxial antiferromagnet under dampinglike spin-orbit torque. It confirms the existence of stable conical precession and derives analytical expressions for the precession under weak uniaxial anisotropy. The analysis reveals that the precession is mainly driven by the exchange interaction and balanced by the damping from SOT, showing potential for improved frequency tunability and lower exciting currents with weak anisotropy and low damping.
NEW JOURNAL OF PHYSICS
(2021)
Article
Quantum Science & Technology
Utkarsh Shashank, Rohit Medwal, Taiga Shibata, Razia Nongjai, Joseph Vimal Vas, Martial Duchamp, Kandasami Asokan, Rajdeep Singh Rawat, Hironori Asada, Surbhi Gupta, Yasuhiro Fukuma
Summary: Efficient charge-spin interconversion is crucial for understanding the functionalities of spin-orbit torque in energy-efficient and high-speed spintronic devices. A new spin Hall material, Pt(S), is reported in this study, demonstrating significantly higher conversion efficiency compared to pristine Pt, along with large spin Hall angle and viable electrical and spin Hall conductivity.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Article
Materials Science, Multidisciplinary
Truman Ng, Yongzheng Luo, Jiaren Yuan, Yihong Wu, Hyunsoo Yang, Lei Shen
Summary: The study reveals that the strong spin Hall effect in LaAlX originates from multiple slight anticrossings of nodal lines and points near the Fermi energy due to high-mirror symmetry and large spin-orbit interaction. Hole doping and increasing temperature can enhance the spin Hall conductivity, but while the former also increases electrical conductivity, the latter decreases it.
Article
Physics, Applied
Bharat Grover, Binoy Krishna Hazra, Tianping Ma, Banabir Pal, Nirel Bernstein, Amit Rothschild, Abhay Kant Srivastava, Samiran Choudhury, Georg Woltersdorf, Amir Capua, Stuart S. P. Parkin
Summary: In this study, the dependence of the spin Hall angle θSH was investigated in epitaxial Al2O3/Pt, MgO/Pt films using a spin-torque driven ferromagnetic resonance method. It was found that the electrical technique had limitations in accurately quantifying θSH at high current densities and could result in erroneous values, particularly for films with large inhomogeneous broadening. The study also revealed a strong dependence of θSH on the crystallographic direction.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Takanori Shirokura, Kou Fujiwara, Pham Nam Hai
Summary: The spin Hall effect in amorphous YPt alloy is found to be strongly sensitive to resistivity, governed by both intrinsic and extrinsic mechanisms. Despite being amorphous, the spin relaxation length in YPt is longer than expected for crystallized Pt-based alloys with the same resistivity.
APPLIED PHYSICS EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
M. Umar Farooq, Lede Xian, Li Huang
Summary: This study systematically investigates the interplay between Dresselhaus spin-orbit coupling (DSOC) and Rashba spin-orbit coupling (RSOC) and their effects on spin Hall effect (SHE) in monoand bilayer InSe. The introduction of Rashba interaction in monolayer InSe increases Zeeman-like spin splitting and enhances spin Hall conductivity (SHC), while the SHC in the unperturbed centrosymmetric AB stacked bilayer stays insignificant in a wide energy range. On the other hand, the AB' stacked bilayer with intrinsic RSOC shows comparable SHC to the AB stacked bilayer with an external electric field, and the spin-momentum locking in the AB' stacked bilayer is switchable by a gate voltage.
Article
Materials Science, Multidisciplinary
Z. Shi, H. Zhong, J. Fan, M. Zhou, J. Yuan
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Physics, Applied
Shi-Jie Xu, Xiaolong Fan, Shi-Ming Zhou, Xuepeng Qiu, Zhong Shi
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Nanoscience & Nanotechnology
L. Ma, Y. Zhang, H. Zhao, H. R. Fu, M. Tang, H. L. Yang, Z. Shi, N. Tian, C. Y. You
Article
Physics, Applied
Weijia Fan, Jie Zhao, Meng Tang, Huanjian Chen, Huanglin Yang, Weiming Lu, Zhong Shi, Xuepeng Qiu
PHYSICAL REVIEW APPLIED
(2019)
Article
Physics, Applied
Weihua Zhu, Yu Zhang, Zhihao Ji, Zhong Shi, Q. Y. Jin, Zongzhi Zhang
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Physics, Multidisciplinary
Junxue Li, Zhong Shi, Victor H. Ortiz, Mohammed Aldosary, Cliff Chen, Vivek Aji, Peng Wei, Jing Shi
PHYSICAL REVIEW LETTERS
(2019)
Article
Nanoscience & Nanotechnology
L. Ma, Y. Zhang, H. Zhao, M. Tang, H. L. Yang, Z. Shi, N. Tian, C. Y. You
Article
Physics, Applied
Huanjian Chen, Dashuai Cheng, Huanglin Yang, Daike Wang, Shiming Zhou, Zhong Shi, Xuepeng Qiu
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Zhong Shi, Shi-Jie Xu, Li Ma, Shi-Ming Zhou, Guang-Yu Guo
PHYSICAL REVIEW APPLIED
(2020)
Article
Physics, Applied
L. Ma, H. R. Fu, M. Tang, X. P. Qiu, Z. Shi, C. Y. You, N. Tian, Jian-Guo Zheng
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Multidisciplinary
Zhong Shi, Qing Xi, Junxue Li, Yufei Li, Mohammed Aldosary, Yadong Xu, Jun Zhou, Shi-Ming Zhou, Jing Shi
Summary: The spin Seebeck effect (SSE) signal of magnon polarons in bulk-Y3Fe5O12 (YIG)/Pt heterostructures shows a transition from a dip to a peak as temperature increases, attributed to the rapid rise of the four-magnon scattering rate. This analysis offers important insights into the microscopic origin of hybridized excitations and the overall temperature dependence of SSE anomalies.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Applied
Yuanyang Du, Jiebin Peng, Zhong Shi, Jie Ren
Summary: We investigate the control of near-field radiative heat transfer between two hyperbolic antiferromagnetic insulators by twist and magnetic fields. The heat flux can be affected by both the twist angle and the magnetic field magnitude, with different symmetries. External magnetic fields cause a nonmonotonic change in the radiative heat flux, with a minimum flux at around 1.5T. This behavior is due to the field changing the nature of magnon polaritons with time-reversal symmetry breaking. We propose a twist-induced thermal switch device that can regulate radiative heat flux through different magnetic fields, with implications for efficient thermal management.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Ting Fu, Shuangfeng Li, Xiaoyu Feng, Yongwei Cui, Jiguang Yao, Bo Wang, Jiangwei Cao, Zhong Shi, Desheng Xue, Xiaolong Fan
Summary: In this study, anomalies in the complex Hall effect near the magnetization compensation temperature of CoGd alloy films were systematically investigated. The occurrence of a topological Hall effect was ruled out through detailed magnetic and transport measurements, leading to the construction of a phenomenological model to explain the complex Hall effect based on the influence of spin-flop effect and component inhomogeneity. This research provides insights into the microscopic magnetic properties and transport properties of rare-earth transition metal ferrimagnetic alloys near the compensation point.
Article
Physics, Multidisciplinary
Q. Xi, B. Liu, Z. Shi, T. Nakayama, J. Zhou, B. Li
Article
Materials Science, Multidisciplinary
S. J. Xu, J. Y. Shi, Y. S. Hou, Z. Zheng, H. B. Zhao, R. Q. Wu, S. M. Zhou, Z. Shi, W. J. Fan