Interplay between spin-orbit coupling and ferromagnetism in magnetotransport properties of a spin-polarized oxide two-dimensional electron system

被引：19

作者：

Stornaiuolo, D. ^{[1
,2
]}

Jouault, B. ^{[3
]}

Di Gennaro, E. ^{[1
,2
]}

Sambri, A. ^{[1
,2
]}

D'Antuono, M. ^{[1
]}

Massarotti, D. ^{[2
,4
]}

Granozio, F. Miletto ^{[2
]}

Di Capua, R. ^{[1
,2
]}

De Luca, G. M. ^{[1
,2
]}

Pepe, G. P. ^{[1
,2
]}

Tafuri, F. ^{[1
,2
]}

Salluzzo, M. ^{[2
]}

机构：

[1] Univ Napoli Federico II, Dipartimento Fis Ettore Pancini, Naples, Italy

[2] CNR, SPIN, Complesso Monte St Angelo Via Cinthia, I-80126 Naples, Italy

[3] Univ Montpellier 2, CNRS, UMR 5221, Lab Charles Coulomb, F-34095 Montpellier, France

[4] Univ Napoli Federico II, Dipartimento Energia Elettr & Tecnol Informaz, Naples, Italy

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 07期

关键词：

WEAK-LOCALIZATION; MAGNETORESISTANCE; (GA; MN)AS;

D O I：

10.1103/PhysRevB.98.075409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the magnetotransport properties of a spin-polarized two-dimensional electron system (2DES) formed in LaAlO3 (LAO)/EuTiO3/SrTiO3 (STO) heterostructures. We show that, at low temperature, the 2DES magnetoconductance exhibits weak antilocalization corrections related to Rashba spin-orbit scattering, in analogy with the LAO/STO 2DES. However, the characteristic spin-orbit scattering field decreases substantially for carrier density higher than 1.9 x 10(13)cm(2). We attribute this behavior to the masking effect of ferromagnetism, which sets in at the same carrier density and at a temperature below 10 K. Our work shows that, while weak antilocalization corrections to the magnetoconductance are strongly reduced by the emergence of ferromagnetism, they persist in a large part of the phase diagram of a spin-polarized oxide 2DES.

引用

页数：6

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