Titre :

The Doping Effect on Ferromagnetic Arrangement and Electronic Structure of Cubic AlAs with Low Concentration of 3d (V, Cr, and Mn) Impurities

Auteur(s) :

Boutaleb, Miloud [Auteur]
Doumi, Bendouma [Auteur]
Mokaddem, Allel [Auteur]
Sayede, Adlane [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Tadjer, Abdelkader [Auteur]

Titre de la revue :

Journal of Superconductivity and Novel Magnetism

Numéro :

31

Pagination :

2157-2163

Date de publication :

2017-12-01

Discipline(s) HAL :

Chimie/Chimie inorganique

Résumé en anglais : [en]

The doping effect of aluminum arsenide (AlAs) with 3d (TM = V, Cr, and Mn) of transition metal impurities gives new materials called diluted magnetic semiconductors, which have interesting electronic and magnetic properties ...
Lire la suite >The doping effect of aluminum arsenide (AlAs) with 3d (TM = V, Cr, and Mn) of transition metal impurities gives new materials called diluted magnetic semiconductors, which have interesting electronic and magnetic properties for spintronics applications. We have used the full-potential linearized augmented plane wave (FP-LAPW) method to calculate the electronic band structures and magnetic properties of Al1−x TM x As at low concentration x = 0.0625 of transition metal (TM = V, Cr, and Mn) atoms. We have found that the majority-spin states of Al0.9375 TM 0.0625As compounds are metallic due to large p-d hybridization between 3d levels of TM and the 4p levels of As around Fermi level, whereas the minority-spin states have semiconductor character. These compounds exhibit a half-metallic behavior with spin polarization of 100%, where the ferromagnetism is originated from double-exchange mechanism. Therefore, Al0.9375 TM 0.0625As (TM = V, Cr, and Mn) materials seem to be good candidates for spin injection in the field of spintronics applications.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Couches minces & nanomatériaux (CMNM)

Date de dépôt :

2019-09-25T14:38:08Z