Shubnikov-De Haas Oscillations in SrTiO3/LaAlO3 Interface

被引：115

作者：

Ben Shalom, M. ^{[1
]}

Ron, A. ^{[1
]}

Palevski, A. ^{[1
]}

Dagan, Y. ^{[1
]}

机构：

[1] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 20期

关键词：

All Open Access; Green;

D O I：

10.1103/PhysRevLett.105.206401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum magnetic oscillations in SrTiO3/LaAlO3 interface are observed in the magnetoresistance. We study their frequency as a function of gate voltage and the evolution of their amplitude with temperature. The data are consistent with the Shubnikov-de Haas theory. The Hall resistivity rho(xy) is nonlinear at low magnetic fields. rho(xy) is fitted assuming multiple carrier contributions. We infer the density of the mobile charge carriers from the oscillations frequency and from Hall measurements. The comparison between these densities suggests multiple valley and spin degeneracy. The small amplitude of the oscillation is discussed in the framework of the multiple band scenario.

引用

页数：4

共 24 条

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