Theory of magnetotunneling spectroscopy in spin triplet p-wave superconductors

被引：52

作者：

Tanaka, Y ^{[1
]}

Tanuma, Y

Kuroki, K

Kashiwaya, S

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648063, Japan

[2] JST, Crest, Nagoya, Aichi 4648063, Japan

[3] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[4] Univ Electrocommun, Dept Appl Phys & Chem, Chofu, Tokyo 1828585, Japan

[5] Nat Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 09期

关键词：

triplet superconductor; tunneling conductance; Doppler shift; chirality;

D O I：

10.1143/JPSJ.71.2102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the influence of a magnetic field H on the zero bias conductance peak (ZBCP) due to zero energy Andreev bound states (ZES) in a normal metal/unconventional superconductor. For p-wave junctions, ZBCP does not split into two by H even for sufficiently low transparent junctions, where ZBCP clearly splits for d-wave. This unique property originates from the fact that for p-wave superconductors, perpendicularly injected quasiparticles form ZES, which contribute most dominantly to the tunneling conductance. In addition, we show that for p(x) + ip(y)-wave superconductor junctions, the height of ZBCP is sensitive to H due to the formation of a broken time reversal symmetry state. We propose that tunneling spectroscopy in the presence of a magnetic field, i.e., magnetotunneling, is a promising method of determining the pairing symmetry of unconventional superconductors.

引用

页码：2102 / 2105

页数：4

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