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
收藏
页码：294 / 297
页数：4
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