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The spin Hall angle (SHA) is a measure of the efficiency with which a transverse spin current is generated from a charge current by the spin-orbit coupling and disorder in the spin Hall effect (SHE). In a study of the SHE for a Pt$|$Py…

Materials Science · Physics 2016-05-12 Lei Wang , R. J. H. Wesselink , Yi Liu , Zhe Yuan , Ke Xia , Paul J. Kelly

State-of-the-art developments in magnetic devices rely on manufacturing faster, more efficient memory elements. A significant development in this direction has been the discovery of orbital torques, which employ the orbital angular momentum…

Mesoscale and Nanoscale Physics · Physics 2025-11-12 James H. Cullen , Zhanning Wang , Dimitrie Culcer

Pt ultrathin films on ferromagnetic insulators have been widely studied for spintronics applications, and magnetic moments of interface Pt atoms were considered to be ferromagnetically ordered due to a magnetic proximity effect (MPE). An…

Materials Science · Physics 2022-11-01 Leon Sakakibara , Yumiko Katayama , Tomohiro Koyama , Daichi Chiba , Kazunori Ueno

In-plane Hall effect (IPHE) triggered by an external magnetic field applied in the transport plane has attracted significant experimental attentions in recent few years 1-6. However, most experiments focus on magnetic materials, where the…

We propose an optical means to realize a spin hall effect (SHE) in neutral atomic system by coupling the internal spin states of atoms to radiation. The interaction between the external optical fields and the atoms creates effective…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Xiong-Jun Liu , Xin Liu , L. C. Kwek , C. H. Oh

In this work we report experiments on defined by shallow etching narrow Hall bars. The magneto-transport properties of intermediate mobility two-dimensional electron systems are investigated and analyzed within the screening theory of the…

Mesoscale and Nanoscale Physics · Physics 2013-05-07 E. M. Kendirlik , S. Sirt , S. B. Kalkan , W. Dietsche , W. Wegscheider , S. Ludwig , A. Siddiki

The interplay between ferromagnetism and topological properties of electronic band structures leads to a precise quantization of Hall resistance without any external magnetic field. This so-called quantum anomalous Hall effect (QAHE) is…

Applied Physics · Physics 2022-03-29 Shamiul Alam , Md Shafayat Hossain , Ahmedullah Aziz

We report a giant spin Hall effect (SHE) in {\beta}-Ta that generates spin currents intense enough to induce efficient spin-transfer-torque switching of ferromagnets, thereby providing a new approach for controlling magnetic devices that…

Materials Science · Physics 2015-06-04 Luqiao Liu , Chi-Feng Pai , Y. Li , H. W. Tseng , D. C. Ralph , R. A. Buhrman

In-plane anomalous Hall effect (IPAHE) is an unconventional anomalous Hall effect (AHE) with the Hall current flows in the plane spanned by the magnetization or magnetic field and the electric field. Here,we predict a stable two-dimensional…

Materials Science · Physics 2024-04-22 Ding Li , Maoyuan Wang , Dengfeng Li , Jianhui Zhou

The quantum anomalous Hall effect (QAHE) is a topological state of matter with a quantized Hall resistance. It has been observed in some two-dimensional insulating materials such as magnetic topological insulator films and twisted bilayer…

Mesoscale and Nanoscale Physics · Physics 2024-02-06 Kai-Zhi Bai , Bo Fu , Zhenyu Zhang , Shun-Qing Shen

Consequences of an exceedingly strong electric field (E field) on the ground state energetics and transport properties of a 2D spinless electron gas in a perpendicular magnetic field (a Quantum Hall Effect (QHE) configuration) are…

Mesoscale and Nanoscale Physics · Physics 2016-09-01 Georgios Konstantinou , Konstantinos Moulopoulos

A single layer ferromagnetic film magnetized in the plane of an ac current flow, exhibits a characteristic Hall voltage with harmonic and second harmonic components, which is attributed to the presence of spin currents with polarization…

Mesoscale and Nanoscale Physics · Physics 2024-05-07 Soumik Aon , Harekrishna Bhunia , Pratap Kumar Pal , Abu Bakkar Miah , Dhananjaya Mahapatra , Anjan Barman , Partha Mitra

Chirality of matter can produce unique responses in optics, electricity and magnetism. In particular, magnetic crystals transmit their handedness to the magnetism via antisymmetric exchange interaction of relativistic origin, producing…

Strongly Correlated Electrons · Physics 2018-02-07 T. Yokouchi , N. Kanazawa , A. Kikkawa , D. Morikawa , K. Shibata , T. Arima , Y. Taguchi , F. Kagawa , Y. Tokura

The Hall effect and its varieties such as quantum, anomalous, and spin Hall effects, provide indispensable tools for the characterization of electronic and magnetic properties of materials, metrology, and spintronics. The conventional…

Mesoscale and Nanoscale Physics · Physics 2018-08-29 G. X. Chen , R. X. Cao , A. Zholud , S. Urazhdin

The spin Hall effect is a celebrated phenomenon in spintronics and magnetism that has found numerous applications in digital electronics (memory and logic), but very few in analog electronics. Practically, the only analog application in…

Mesoscale and Nanoscale Physics · Physics 2024-08-19 Raisa Fabiha , Pratap Kumar Pal , Michael Suche , Amrit Kumar Mondal , Erdem Topsakal , Anjan Barman , Supriyo Bandyopadhyay

In a heavy fermion system, there exists the anomalous Hall effect caused by localized $f$-orbital freedom, in addition to the normal Hall effect due to the Lorentz force. In 1994, we found that the Hall coefficient caused by the anomalous…

Strongly Correlated Electrons · Physics 2009-10-30 Hiroshi Kontani , Morio Miyazawa , Kosaku Yamada

A new type of anomalous Hall effect is shown to arise from the interaction of conduction electrons with dipolar spin waves in ferromagnets. This effect exists even in homogeneous ferromagnets without relativistic spin-orbit coupling. The…

Materials Science · Physics 2015-10-14 Kei Yamamoto , Koji Sato , Eiji Saitoh , Hiroshi Kohno

Graphene Hall effect magnetic field sensors hold great promise for the development of ultra-sensitive magnetometers. Their performance is frequently analysed using the two-channel model where electron and hole conductivities are simply…

Mesoscale and Nanoscale Physics · Physics 2024-10-08 Lionel Petit , Tom Fournier , Géraldine Ballon , Cédric Robert , Delphine Lagarde , Pascal Puech , Thomas Blon , Benjamin Lassagne

Non-trivial spin structures in itinerant magnets can give rise to topological Hall effect (THE) due to the interacting local magnetic moments and conductive electrons. While, in series of materials, THE has mostly been observed at low…

Strongly Correlated Electrons · Physics 2021-03-16 Gaoshang Gong , Longmeng Xu , Yuming Bai , Yongqiang Wang , Songliu Yuan , Yong Liu , Zhaoming Tian

Anomalous Hall effect (AHE), occurring in materials with broken time-reversal symmetry, epitomizes the intricate interplay between magnetic order and orbital motions of electrons[1-4]. In two dimensional (2D) systems, AHE is always coupled…

Mesoscale and Nanoscale Physics · Physics 2025-05-08 Qingxin Li , Hua Fan , Min Li , Yinghai Xu , Junwei Song , Kenji Watanabe , Takashi Taniguchi , Hua Jiang , X. C. Xie , James Hone , Cory Dean , Yue Zhao , Jianpeng Liu , Lei Wang
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