Upper Critical Field as a Probe for Multiband Superconductivity in Bulk and Interfacial STO

被引：19

作者：

Edge, J. M. ^{[1
,2
]}

Balatsky, A. V. ^{[1
,2
,3
]}

机构：

[1] KTH Royal Inst Technol, NORDITA, S-10691 Stockholm, Sweden

[2] Stockholm Univ, S-10691 Stockholm, Sweden

[3] Alamos Natl Lab, Inst Mat Sci, Los Alamos, NM 87545 USA

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2015年 / 28卷 / 08期

基金：

欧洲研究理事会;

关键词：

LaAlO3/SrTiO3; LAO/STO; Upper critical field; Multiband superconductivity; 2-BAND SUPERCONDUCTIVITY; LAYERED SUPERCONDUCTOR; IRON; TEMPERATURE; SRTIO3;

D O I：

10.1007/s10948-015-3052-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the temperature dependence of the upper critical field H-c2 as a tool to probe the possible presence of multiband superconductivity at the interface between LaAlO3 and SrTiO3 (LAO/STO). The behaviour of H-c2 can clearly indicate two-band superconductivity through its nontrivial temperature dependence. For the disorder scattering dominated two-dimensional LAO/STO interface, we find a characteristic non-monotonic curvature of the H-c2(T). We also analyse the H-c2 for multiband bulk STO and find similar behaviour.

引用

页码：2373 / 2384

页数：12

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