Nonequilibrium dynamics in a spin valve with noncollinear magnetization
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00564304" target="_blank" >RIV/68378271:_____/22:00564304 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/22:10450917
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.106.144435" target="_blank" >https://doi.org/10.1103/PhysRevB.106.144435</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.106.144435" target="_blank" >10.1103/PhysRevB.106.144435</a>
Alternative languages
Result language
angličtina
Original language name
Nonequilibrium dynamics in a spin valve with noncollinear magnetization
Original language description
We utilize a hybrid quantum-classical equation of motion approach to investigate the spin dynamics and spin-transfer torque in a spin valve under bias voltage. We show that the interplay between localized classical magnetic moments and conduction electrons induces a complex effective exchange coupling between the magnetic layers. This leads to a declination of magnetizations from layers' anisotropy axes even in equilibrium. Introducing a finite bias voltage triggers spin currents and related spin-transfer torques which further tilt the magnetizations and govern the relaxation processes of the spin dynamics. We show that symmetric and asymmetric voltage drops can lead to relaxation times of the spin dynamics that differ by several orders of magnitude at comparable charge currents. In both cases, we observe resonant features, where the relaxation is boosted whenever the chemical potential of the leads matches the maxima in the density of the states of the spin-valve electrons.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA22-22419S" target="_blank" >GA22-22419S: Molecular spintronics: control of spin-orbit fields</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
106
Issue of the periodical within the volume
14
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
144435
UT code for WoS article
000880197300003
EID of the result in the Scopus database
2-s2.0-85141505328