Spin-polarized transport utilizing d(0) ferromagnetism: an ab initio study of CaC/MgS/CaC (001) heterojunctions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10315526" target="_blank" >RIV/00216208:11320/15:10315526 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0022-3727/48/45/455002" target="_blank" >http://dx.doi.org/10.1088/0022-3727/48/45/455002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0022-3727/48/45/455002" target="_blank" >10.1088/0022-3727/48/45/455002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spin-polarized transport utilizing d(0) ferromagnetism: an ab initio study of CaC/MgS/CaC (001) heterojunctions

Popis výsledku v původním jazyce

The electronic structure and magnetic properties of rocksalt-type CaC compound are studied by means of first-principles calculations. The B1-type calcium monocarbide is a metastable, nearly half-metallic ferromagnetic compound, with a magnetic moment of1.81 mu B/f.u. and a negative Fermi level spin-polarization of 50%. The estimated Curie temperature exceeds the room temperature. The electronic, magnetic and spin-polarized transport properties of CaC/MgS/CaC (0 0 1) heterostructures are investigated byusing a first-principles Green's function technique for layered structures in conjunction with the Kubo-Landauer formalism. The magnetism of CaC (0 0 1) electrodes is robust while the Fermi level spin-polarization of interfacial CaC layers at CaC/MgS (00 1) interfaces increases over the bulk value. The localized states formed at CaC/MgS (0 0 1) interfaces strongly enhance the minority-spin ferromagnetic state conductance. The current spin-polarization reaches values as high as 99%. Ver

Název v anglickém jazyce

Spin-polarized transport utilizing d(0) ferromagnetism: an ab initio study of CaC/MgS/CaC (001) heterojunctions

Popis výsledku anglicky

The electronic structure and magnetic properties of rocksalt-type CaC compound are studied by means of first-principles calculations. The B1-type calcium monocarbide is a metastable, nearly half-metallic ferromagnetic compound, with a magnetic moment of1.81 mu B/f.u. and a negative Fermi level spin-polarization of 50%. The estimated Curie temperature exceeds the room temperature. The electronic, magnetic and spin-polarized transport properties of CaC/MgS/CaC (0 0 1) heterostructures are investigated byusing a first-principles Green's function technique for layered structures in conjunction with the Kubo-Landauer formalism. The magnetism of CaC (0 0 1) electrodes is robust while the Fermi level spin-polarization of interfacial CaC layers at CaC/MgS (00 1) interfaces increases over the bulk value. The localized states formed at CaC/MgS (0 0 1) interfaces strongly enhance the minority-spin ferromagnetic state conductance. The current spin-polarization reaches values as high as 99%. Ver

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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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

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics D - Applied Physics

ISSN

0022-3727

e-ISSN

—

Svazek periodika

48

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000367070000005

EID výsledku v databázi Scopus

2-s2.0-84947054608