Tetragonal CuMnAs alloy: role of defects

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00521294" target="_blank" >RIV/68378271:_____/19:00521294 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/19:10398942

Výsledek na webu

<a href="https://doi.org/10.1016/j.jmmm.2018.10.145" target="_blank" >https://doi.org/10.1016/j.jmmm.2018.10.145</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2018.10.145" target="_blank" >10.1016/j.jmmm.2018.10.145</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tetragonal CuMnAs alloy: role of defects

Popis výsledku v původním jazyce

The antiferromagnetic (AFM) CuMnAs alloy with tetragonal structure is a promising material for the AFM spintronics. The resistivity measurements indicate the presence of defects. We confirmed vacancies on Mn or Cu sublattices and MnCu and CuMn antisites as most probable defects in CuMnAs by our new ab initio total energy calculations. We have estimated resistivities of possible defect types as well as resistivities of samples for which the X-ray structural analysis is available. In the latter case we have found that samples with Cu- and Mn-vacancies with low formation energies have also resistivities which agree well with the experiment. Finally, we have also calculated exchange interactions and estimated the Néel temperatures by using the Monte Carlo approach. A good agreement with experiment was obtained.n

Název v anglickém jazyce

Tetragonal CuMnAs alloy: role of defects

Popis výsledku anglicky

The antiferromagnetic (AFM) CuMnAs alloy with tetragonal structure is a promising material for the AFM spintronics. The resistivity measurements indicate the presence of defects. We confirmed vacancies on Mn or Cu sublattices and MnCu and CuMn antisites as most probable defects in CuMnAs by our new ab initio total energy calculations. We have estimated resistivities of possible defect types as well as resistivities of samples for which the X-ray structural analysis is available. In the latter case we have found that samples with Cu- and Mn-vacancies with low formation energies have also resistivities which agree well with the experiment. Finally, we have also calculated exchange interactions and estimated the Néel temperatures by using the Monte Carlo approach. A good agreement with experiment was obtained.n

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

<a href="/cs/project/GB14-37427G" target="_blank" >GB14-37427G: Centrum spintroniky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

—

Svazek periodika

474

Číslo periodika v rámci svazku

Mar

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

467-471

Kód UT WoS článku

000459494600068

EID výsledku v databázi Scopus

2-s2.0-85056670881