Interface scattering effect on the differential conductance of normal-metal superconductor junctions

被引：26

作者：

Dong, ZC

Xing, DY

Wang, ZD

Sheng, L

机构：

[1] UNIV HONG KONG, DEPT PHYS, HONG KONG, HONG KONG

[2] CCAST, WORLD LAB, BEIJING 100080, PEOPLES R CHINA

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1996年 / 100卷 / 03期

关键词：

D O I：

10.1007/s002570050129

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Taking into account the interface roughness of normal-metal/superconductor junction, we propose an effective Hamiltonian for the interface scattering. In the framework of Blonder-Tinkham-Klapwijk (BTK) model, we calculate the differential conductance of N/S junction in the presence of the interface scattering. As well, the effect of the finite lifetime of the quasi-particles due to the inelastic scattering is also addressed. Our results are in qualitative agreement with experiments.

引用

收藏

页码：329 / 333

页数：5

相关论文

共 19 条

[1] NORMAL TUNNELING AND NORMAL TRANSPORT - DIAGNOSTICS FOR THE RESONATING-VALENCE-BOND STATE [J].

ANDERSON, PW ;

ZOU, Z .

PHYSICAL REVIEW LETTERS, 1988, 60 (02) :132-135

[2] TRANSITION FROM METALLIC TO TUNNELING REGIMES IN SUPERCONDUCTING MICRO-CONSTRICTIONS - EXCESS CURRENT, CHARGE IMBALANCE, AND SUPER-CURRENT CONVERSION [J].

BLONDER, GE ;

TINKHAM, M ;

KLAPWIJK, TM .

PHYSICAL REVIEW B, 1982, 25 (07) :4515-4532

[3]

de Gennes P.G., 1965, SUPERCONDUCTIVITY ME

[4] TUNNELING STUDY OF SUPERCONDUCTIVITY NEAR THE METAL-INSULATOR-TRANSITION [J].

DYNES, RC ;

GARNO, JP ;

HERTEL, GB ;

ORLANDO, TP .

PHYSICAL REVIEW LETTERS, 1984, 53 (25) :2437-2440

[5] PROPERTIES OF THE GAP ENERGY IN THE VANHOVE SCENARIO OF HIGH-TEMPERATURE SUPERCONDUCTIVITY [J].

GETINO, JM ;

DELLANO, M ;

RUBIO, H .

PHYSICAL REVIEW B, 1993, 48 (01) :597-599

[6] CRYOGENIC SCANNING TUNNELING MICROSCOPY AND SPECTROSCOPY ON THE CLEAVED SURFACE OF BI-SR-CA-CU-O DOWN TO 4.2-K [J].

HASEGAWA, T ;

NANTOH, M ;

KITAZAWA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1991, 30 (2B) :L276-L279

[7] POINT-CONTACT TUNNELING STUDY OF THE NORMAL AND SUPERCONDUCTING STATES OF TL2BA2CACU2OX [J].

HUANG, Q ;

ZASADZINSKI, JF ;

GRAY, KE .

PHYSICA C, 1989, 161 (02) :141-144

[8] INELASTIC TRANSPORT THROUGH NORMAL-METAL SUPERCONDUCTOR INTERFACES [J].

KIRTLEY, JR .

PHYSICAL REVIEW B, 1993, 47 (17) :11379-11383

[9]

KIRTLEY JR, 1990, PHYS REV LETT, V65, P789

[10] MODIFICATION OF THE BLONDER, TINKHAM AND KLAPWIJK THEORY OF NORMAL METAL-SUPERCONDUCTOR POINT CONTACT DUE TO CONTACT HETEROGENEITY [J].

KUPKA, M .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (51) :10599-10606