Magnetic-field dependence of tunneling conductance spectra of La0.67Sr0.33MnO3/YBa2Cu3O7-δ junctions in ultra-low temperatures

被引：3

作者：

Sawa, A

Kashiwaya, S

Kashiwaya, H

Obara, H

Yamasaki, H

Koyanagi, M

Kurosawa, I

Tanaka, Y

机构：

[1] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

[2] Japan Womens Univ, Bunkyo Ku, Tokyo 1128681, Japan

[3] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[4] JST, CREST, Kawaguchi, Saitama 3200012, Japan

来源：

PHYSICA C | 2001年 / 357卷

关键词：

YBa2Cu3O7-delta; tunnel junction; zero-bias conductance peak; Zeeman splitting;

D O I：

10.1016/S0921-4534(01)00231-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We precisely measured conductance spectra near the zero-bias conductance peak (ZBCP) in La0.67Sr0.33MnO3/YBa2Cu3O7-delta junctions, which reflects the formation of the surface bound states in the d-wave superconductors. When the conductance spectra of the junctions were measured at ultra-low temperatures (< 150 mK), very sharp ZBCPs were observed. We found the notable features of the magnetic field response of the ZBCP, i.e., the coexistence of spin-dependent and spin-independent components in the ZBCP and the apparent absence of the Zeeman splitting. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：294 / 297

页数：4

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