Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00544558" target="_blank" >RIV/68378271:_____/21:00544558 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10431871

Výsledek na webu

<a href="https://doi.org/10.1038/s41928-020-00506-4" target="_blank" >https://doi.org/10.1038/s41928-020-00506-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41928-020-00506-4" target="_blank" >10.1038/s41928-020-00506-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses

Popis výsledku v původním jazyce

Antiferromagnets are of potential use in the development of spintronic devices due to their ultrafast dynamics, insensitivity to external magnetic fields and absence of magnetic stray fields. Similar to their ferromagnetic counterparts, antiferromagnets can store information in the orientations of the collective magnetic order vector. However, the readout magnetoresistivity signals in simple antiferromagnetic films are weak, and reorientation of the magnetic order vector via optical excitation has not yet been achieved. Here we report the reversible and reproducible quenching of antiferromagnetic CuMnAs into nano-fragmented domain states using either electrical or ultrashort optical pulses. The changes in the resistivity of the system approach 20% at room temperature, which is comparable to the giant magnetoresistance ratios in ferromagnetic multilayers. We also obtain a signal readout by optical reflectivity.

Název v anglickém jazyce

Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses

Popis výsledku anglicky

Antiferromagnets are of potential use in the development of spintronic devices due to their ultrafast dynamics, insensitivity to external magnetic fields and absence of magnetic stray fields. Similar to their ferromagnetic counterparts, antiferromagnets can store information in the orientations of the collective magnetic order vector. However, the readout magnetoresistivity signals in simple antiferromagnetic films are weak, and reorientation of the magnetic order vector via optical excitation has not yet been achieved. Here we report the reversible and reproducible quenching of antiferromagnetic CuMnAs into nano-fragmented domain states using either electrical or ultrashort optical pulses. The changes in the resistivity of the system approach 20% at room temperature, which is comparable to the giant magnetoresistance ratios in ferromagnetic multilayers. We also obtain a signal readout by optical reflectivity.

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

2021

Kód důvěrnosti údajů

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

Název periodika

Nature Electronics

ISSN

2520-1131

e-ISSN

2520-1131

Svazek periodika

4

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

30-37

Kód UT WoS článku

000594793300001

EID výsledku v databázi Scopus

2-s2.0-85096892846