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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics-Condensed Matter

ISSN

0953-8984

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000520456100001

EID výsledku v databázi Scopus

2-s2.0-85082103071