Spin-phonon interaction increased by compressive strain in antiferromagnetic MnO thin films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00531760" target="_blank" >RIV/68378271:_____/20:00531760 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1361-648X/ab6be9" target="_blank" >https://doi.org/10.1088/1361-648X/ab6be9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-648X/ab6be9" target="_blank" >10.1088/1361-648X/ab6be9</a>

Result language

angličtina

Original language name

Spin-phonon interaction increased by compressive strain in antiferromagnetic MnO thin films

Original language description

MnO thin films with various thicknesses and strains were grown on MgO substrates by pulsed laser deposition technique. Films grown on (001)-oriented MgO substrates exhibit homogenous biaxial compressive strain which increases as the film thickness is reduced. For that reason, in paramagnetic phase,the frequency of doubly-degenerate phonon increases with the strain, and splits below Néel temperature TN due to the magnetic-exchange interaction. The phonon splitting in the MnO (001) films is 20% larger than that of the bulk MnO. Total phonon splitting is 55 cm-1 in (110)-oriented MnO film, which is more than twice the value in bulk MnO, but since the splitting is present already in paramagnetic phase, we cannot clearly correlate it with the value of exchange coupling constant.

Czech name

—

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Journal of Physics-Condensed Matter

ISSN

0953-8984

e-ISSN

—

Volume of the periodical

32

Issue of the periodical within the volume

17

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

1-8

UT code for WoS article

000520456100001

EID of the result in the Scopus database

2-s2.0-85082103071