scholarly journals Spin-transfer torque in ferromagnetic bilayers generated by anomalous Hall effect and anisotropic magnetoresistance

2016 ◽  
Author(s):  
Tomohiro Taniguchi ◽  
Julie Grollier ◽  
M. D. Stiles
Keyword(s):  
Hall Effect ◽  
Anomalous Hall Effect ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Anisotropic Magnetoresistance

scholarly journals Nonlinear dynamics induced anomalous Hall effect in topological insulators

2016 ◽  
Vol 2016 (DPC) ◽  
pp. 001543-001553
Author(s):  
Guanglei Wang ◽  
Hongya Xu ◽  
Ying-Cheng Lai
Keyword(s):  
Hall Effect ◽  
Three Dimensional ◽  
Anomalous Hall Effect ◽  
Transmission Probability ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Alternative Mechanism ◽  
Final States ◽  
Nonlinear Dynamical ◽  
Dynamical Behaviors

We uncover an alternative mechanism for anomalous Hall effect. In particular, we investigate the magnetisation dynamics of an insulating ferromagnet (FM) deposited on the surface of a three-dimensional topological insulator (TI), subject to an external voltage. The spin-polarised current on the TI surface induces a spin-transfer torque on the magnetisation of the top FM while its dynamics can change the transmission probability of the surface electrons through the exchange coupling and hence the current. We find a host of nonlinear dynamical behaviors including multistability, chaos, and phase synchronisation. Strikingly, a dynamics mediated Hall-like current can arise, which exhibits a nontrivial dependence on the channel conductance. We develop a physical understanding of the mechanism that leads to the anomalous Hall effect. The nonlinear dynamical origin of the effect stipulates that a rich variety of final states exist, implying that the associated Hall current can be controlled to yield desirable behaviors. The phenomenon can find applications in Dirac-material based spintronics.

Spin-transfer torque induced by the spin anomalous Hall effect

2018 ◽  
Vol 1 (2) ◽  
pp. 120-123 ◽  
Author(s):  
Satoshi Iihama ◽  
Tomohiro Taniguchi ◽  
Kay Yakushiji ◽  
Akio Fukushima ◽  
Yoichi Shiota ◽  
...  
Keyword(s):  
Hall Effect ◽  
Anomalous Hall Effect ◽  
Spin Transfer Torque ◽  
Spin Transfer

Anisotropic magnetoresistance and anomalous Hall effect in manganite thin films

2005 ◽  
Vol 17 (17) ◽  
pp. 2733-2740 ◽  
Author(s):  
M Bibes ◽  
V Laukhin ◽  
S Valencia ◽  
B Martínez ◽  
J Fontcuberta ◽  
...  
Keyword(s):  
Thin Films ◽  
Hall Effect ◽  
Anomalous Hall Effect ◽  
Anisotropic Magnetoresistance

scholarly journals Spin‐Polarized Current, Spin‐Transfer Torque, and Spin Hall Effect in Presence of an Electromagnetic Non‐Minimal Coupling

2020 ◽  
Vol 532 (3) ◽  
pp. 1900357
Author(s):  
Rodrigo Turcati ◽  
Carlos Andres Bonilla Quintero ◽  
José Abdalla Helayël‐Neto ◽  
Enrique Arias
Keyword(s):  
Hall Effect ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Hall Effect ◽  
Minimal Coupling ◽  
Spin Polarized
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