scholarly journals Nonlinear bias dependence of spin-transfer torque from atomic first principles

2011 ◽  
Vol 84 (1) ◽  
Author(s):  
Xingtao Jia ◽  
Ke Xia ◽  
Youqi Ke ◽  
Hong Guo
Keyword(s):  
First Principles ◽  
Spin Transfer Torque ◽  
Spin Transfer

First-principles calculation of the nonadiabatic spin transfer torque in Ni and Fe

2011 ◽  
Vol 84 (22) ◽  
Author(s):  
Keith Gilmore ◽  
Ion Garate ◽  
Allan H. MacDonald ◽  
M. D. Stiles
Keyword(s):  
First Principles ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
First Principles Calculation

scholarly journals First-principles spin-transfer torque in CuMnAs|GaP|CuMnAs junctions

2017 ◽  
Vol 95 (6) ◽  
Author(s):  
Maria Stamenova ◽  
Razie Mohebbi ◽  
Jamileh Seyed-Yazdi ◽  
Ivan Rungger ◽  
Stefano Sanvito
Keyword(s):  
First Principles ◽  
Spin Transfer Torque ◽  
Spin Transfer

scholarly journals Spin transfer torque in Mn3Ga -based ferrimagnetic tunnel junctions from first principles

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Maria Stamenova ◽  
Plamen Stamenov ◽  
Farzad Mahfouzi ◽  
Qilong Sun ◽  
Nicholas Kioussis ◽  
...  
Keyword(s):  
First Principles ◽  
Tunnel Junctions ◽  
Spin Transfer Torque ◽  
Spin Transfer

Introduction of spin torques

2017 ◽  
Author(s):  
T. Kimura
Keyword(s):  
Angular Momentum ◽  
Giant Magnetoresistance ◽  
Spontaneous Magnetization ◽  
Magnetic Domain ◽  
Magnetic Multilayers ◽  
Transfer Effect ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Angular Momentum ◽  
Spin Torques

This chapter discusses the spin-transfer effect, which is described as the transfer of the spin angular momentum between the conduction electrons and the magnetization of the ferromagnet that occurs due to the conservation of the spin angular momentum. L. Berger, who introduced the concept in 1984, considered the exchange interaction between the conduction electron and the localized magnetic moment, and predicted that a magnetic domain wall can be moved by flowing the spin current. The spin-transfer effect was brought into the limelight by the progress in microfabrication techniques and the discovery of the giant magnetoresistance effect in magnetic multilayers. Berger, at the same time, separately studied the spin-transfer torque in a system similar to Slonczewski’s magnetic multilayered system and predicted spontaneous magnetization precession.

scholarly journals First-Principles Quantum Transport Modeling of Spin-Transfer and Spin-Orbit Torques in Magnetic Multilayers

2018 ◽  
pp. 1-35 ◽  
Author(s):  
Branislav K. Nikolić ◽  
Kapildeb Dolui ◽  
Marko D. Petrović ◽  
Petr Plecháč ◽  
Troels Markussen ◽  
...  
Keyword(s):  
Quantum Transport ◽  
First Principles ◽  
Magnetic Multilayers ◽  
Spin Transfer ◽  
Transport Modeling ◽  
Spin Orbit

scholarly journals Control of Structural and Magnetic Properties of Polycrystalline Co2FeGe Films via Deposition and Annealing Temperatures

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1229
Author(s):  
Andrii Vovk ◽  
Sergey A. Bunyaev ◽  
Pavel Štrichovanec ◽  
Nikolay R. Vovk ◽  
Bogdan Postolnyi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Post Deposition Annealing ◽  
Structure Variation ◽  
Annealing Temperatures ◽  
Damping Parameter ◽  
Soft Ferromagnetic ◽  
Thin Polycrystalline ◽  
Post Deposition

Thin polycrystalline Co2FeGe films with composition close to stoichiometry have been fabricated using magnetron co-sputtering technique. Effects of substrate temperature (TS) and post-deposition annealing (Ta) on structure, static and dynamic magnetic properties were systematically studied. It is shown that elevated TS (Ta) promote formation of ordered L21 crystal structure. Variation of TS (Ta) allow modification of magnetic properties in a broad range. Saturation magnetization ~920 emu/cm3 and low magnetization damping parameter α ~ 0.004 were achieved for TS = 573 K. This in combination with soft ferromagnetic properties (coercivity below 6 Oe) makes the films attractive candidates for spin-transfer torque and magnonic devices.

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