Spin caloric effects in antiferromagnets assisted by an external spin current

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00510860" target="_blank" >RIV/68378271:_____/18:00510860 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1361-6463/aac56b" target="_blank" >https://doi.org/10.1088/1361-6463/aac56b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/aac56b" target="_blank" >10.1088/1361-6463/aac56b</a>

Result language

angličtina

Original language name

Spin caloric effects in antiferromagnets assisted by an external spin current

Original language description

Searching for novel spin caloric effects in antiferromagnets, we study the properties of thermally activated magnons in the presence of an external spin current and temperature gradient. We predict the spin Peltier effect—generation of a heat flux by spin accumulation—in an antiferromagnetic insulator with cubic or uniaxial magnetic symmetry. This effect is related to the spin-current induced splitting of the relaxation times of the magnons with the opposite spin direction. We show that the Peltier effect can trigger antiferromagnetic domain wall motion with a force whose value grows with the temperature of a sample. At a temperature larger than the energy of the low-frequency magnons, this force is much larger than the force caused by direct spin transfer between the spin current and the domain wall. We also demonstrate that the external spin current can induce the magnon spin Seebeck effect. The corresponding Seebeck coefficient is controlled by the current density.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physics D-Applied Physics

ISSN

0022-3727

e-ISSN

—

Volume of the periodical

51

Issue of the periodical within the volume

26

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000435102800001

EID of the result in the Scopus database

2-s2.0-85049339347