Room-temperature weak collinear ferrimagnet with symmetry-driven large intrinsic magneto-optic signatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10473167" target="_blank" >RIV/00216208:11320/23:10473167 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/23:00371983

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=M07nmkZk0N" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=M07nmkZk0N</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.107.014404" target="_blank" >10.1103/PhysRevB.107.014404</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Room-temperature weak collinear ferrimagnet with symmetry-driven large intrinsic magneto-optic signatures

Popis výsledku v původním jazyce

Here we present a magnetic thin film with a weak ferrimagnetic (FIM) phase above the Neel temperature (T(N) = 240 K) and a noncollinear antiferromagnetic (AFM) phase below, exhibiting a small net magnetization due to strain-associated canting of the magnetic moments. A long-range ordered FIM phase has been predicted in related materials, but without symmetry analysis. We now perform this analysis and use it to calculate the magneto-optical Kerr effect (MOKE) spectra in the AFM and FIM phases. From the good agreement between the form of the measured and predicted MOKE spectra, we propose the AFM and FIM phases share the magnetic space group C2&apos;/m&apos; and that the symmetry-driven magneto-optic and magneto-transport properties are maximized at room temperature in the FIM phase due to the nonzero intrinsic Berry phase contribution present in these materials. A room temperature FIM with large optical and transport signatures, as well as sensitivity to lattice strain and magnetic field, has useful prospects for high-speed spintronic applications.

Název v anglickém jazyce

Room-temperature weak collinear ferrimagnet with symmetry-driven large intrinsic magneto-optic signatures

Popis výsledku anglicky

Here we present a magnetic thin film with a weak ferrimagnetic (FIM) phase above the Neel temperature (T(N) = 240 K) and a noncollinear antiferromagnetic (AFM) phase below, exhibiting a small net magnetization due to strain-associated canting of the magnetic moments. A long-range ordered FIM phase has been predicted in related materials, but without symmetry analysis. We now perform this analysis and use it to calculate the magneto-optical Kerr effect (MOKE) spectra in the AFM and FIM phases. From the good agreement between the form of the measured and predicted MOKE spectra, we propose the AFM and FIM phases share the magnetic space group C2&apos;/m&apos; and that the symmetry-driven magneto-optic and magneto-transport properties are maximized at room temperature in the FIM phase due to the nonzero intrinsic Berry phase contribution present in these materials. A room temperature FIM with large optical and transport signatures, as well as sensitivity to lattice strain and magnetic field, has useful prospects for high-speed spintronic applications.

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

107

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

014404

Kód UT WoS článku

000916195000006

EID výsledku v databázi Scopus

2-s2.0-85146339648