Influence of the impurity scattering on charge transport in unconventional superconductor junctions

被引：25

作者：

Lu, Bo ^{[1
]}

Burset, Pablo ^{[1
]}

Tanuma, Yasunari ^{[2
]}

Golubov, Alexander A. ^{[3
,4
,7
]}

Asano, Yasuhiro ^{[5
,6
,7
]}

Tanaka, Yukio ^{[1
,7
]}

机构：

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

[2] Akita Univ, Grad Sch Engn Sci, Akita 0108502, Japan

[3] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

[4] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

[5] Hokkaido Univ, Dept Appl Phys, Sapporo, Hokkaido 0608628, Japan

[6] Hokkaido Univ, Ctr Topol Sci & Technol, Sapporo, Hokkaido 0608628, Japan

[7] Moscow Inst Phys & Technol, Moscow 141700, Russia

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 01期

基金：

日本学术振兴会; 俄罗斯科学基金会;

关键词：

P-WAVE SUPERCONDUCTORS; SPIN-ACTIVE INTERFACES; TRIPLET SUPERCONDUCTIVITY; TOPOLOGICAL INSULATORS; TUNNELING SPECTROSCOPY; ANDREEV REFLECTION; SUPERFLUID HE-3; TIME-REVERSAL; BOUND-STATES; SR2RUO4;

D O I：

10.1103/PhysRevB.94.014504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the influence of nonmagnetic impurity scatterings on the tunneling conductance of a junction consisting of a normal metal and a disordered unconventional superconductor by solving the quasiclassical Eilenberger equation self-consistently. We find that the impurity scatterings in both the Born and the unitary limits affect the formation of the Andreev bound states and modify strongly the tunneling spectra around zero bias. Our results are interpreted well by the appearance of odd-frequency Cooper pairs near the interface and by the divergent behavior of the impurity self-energy. The present paper provides a useful tool to identify the pairing symmetry of unconventional superconductors in experiments.

引用

页数：9

共 87 条

[1] New directions in the pursuit of Majorana fermions in solid state systems [J].

Alicea, Jason .

REPORTS ON PROGRESS IN PHYSICS, 2012, 75 (07)

[2] Majorana fermions in a tunable semiconductor device [J].

Alicea, Jason .

PHYSICAL REVIEW B, 2010, 81 (12)

[3] THEORY OF DIRTY SUPERCONDUCTORS [J].

ANDERSON, PW .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 11 (1-2) :26-30

[4] Correlation between specular Andreev reflection and zero-energy states in normal-metal/d-wave-superconductor junctions -: art. no. 064522 [J].

Asano, Y ;

Tanaka, Y .

PHYSICAL REVIEW B, 2002, 65 (06) :1-5

[5] GREEN-FUNCTION IN PROXIMITY-CONTACT SUPERCONDUCTING-NORMAL DOUBLE-LAYERS [J].

ASHIDA, M ;

AOYAMA, S ;

HARA, J ;

NAGAI, K .

PHYSICAL REVIEW B, 1989, 40 (13) :8673-8686

[6] Anomalous surface states at interfaces in p-wave superconductors [J].

Bakurskiy, S. V. ;

Golubov, A. A. ;

Kupriyanov, M. Yu. ;

Yada, K. ;

Tanaka, Y. .

PHYSICAL REVIEW B, 2014, 90 (06)

[7] NEW CLASS OF SINGLET SUPERCONDUCTORS WHICH BREAK TIME-REVERSAL AND PARITY [J].

BALATSKY, A ;

ABRAHAMS, E .

PHYSICAL REVIEW B, 1992, 45 (22) :13125-13128

[8] Impurity-induced states in conventional and unconventional superconductors [J].

Balatsky, A. V. ;

Vekhter, I. ;

Zhu, Jian-Xin .

REVIEWS OF MODERN PHYSICS, 2006, 78 (02) :373-433

[9] SUPERCONDUCTIVITY WITH PAIRS IN A RELATIVE P WAVE [J].

BALIAN, R ;

WERTHAMER, NR .

PHYSICAL REVIEW, 1963, 131 (04) :1553-&

[10]

BEREZINSKII VL, 1974, JETP LETT+, V20, P287

← 1 2 3 4 5 6 7 8 9 →