QUANTUM TUNNELING CURRENTS IN A SUPERCONDUCTING JUNCTION

被引：17

作者：

WORSHAM, AH

UGRAS, NG

WINKLER, D

PROBER, DE

ERICKSON, NR

GOLDSMITH, PF

机构：

[1] YALE UNIV, DEPT APPL PHYS, NEW HAVEN, CT 06520 USA

[2] UNIV MASSACHUSETTS, DEPT PHYS & ASTRON, AMHERST, MA 01003 USA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.67.3034

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the full voltage dependence of the quantum conductance and quantum susceptance which arise, respectively, from the dissipative and nondissipative quasiparticle tunneling currents in a superconductor-insulator-superconductor tunnel junction. Using a standing-wave technique, we measured the admittance of the tunnel junction at 87 GHz. The admittance is the sum of the quantum conductance and the quantum susceptance. We report the first direct observation of the reactive quasiparticle singularity which is evident in the quantum susceptance.

引用

收藏

页码：3034 / 3037

页数：4

相关论文

共 16 条

[1] COHERENT AND SEQUENTIAL TUNNELING IN SERIES BARRIERS [J].

BUTTIKER, M .

IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1988, 32 (01) :63-75

[2] PHOTOEXCITED COHERENT TUNNELING IN A DOUBLE-BARRIER SUPERLATTICE [J].

CHOI, KK ;

LEVINE, BF ;

BETHEA, CG ;

WALKER, J ;

MALIK, RJ .

PHYSICAL REVIEW LETTERS, 1987, 59 (21) :2459-2462

[3] SUPERCONDUCTIVE TUNNELING [J].

COHEN, MH ;

FALICOV, LM ;

PHILLIPS, JC .

PHYSICAL REVIEW LETTERS, 1962, 8 (08) :316-&

[4] THERMAL-ACTIVATION IN A TWO-DIMENSIONAL POTENTIAL [J].

HAN, S ;

LAPOINTE, J ;

LUKENS, JE .

PHYSICAL REVIEW LETTERS, 1989, 63 (16) :1712-1715

[5] JOSEPHSON TUNNELING CURRENT IN PRESENCE OF A TIME-DEPENDENT VOLTAGE [J].

HARRIS, RE .

PHYSICAL REVIEW B, 1975, 11 (09) :3329-3333

[6] OBSERVATION OF NONDISSIPATIVE QUASI-PARTICLE TUNNEL CURRENTS IN SUPERCONDUCTING TUNNEL-JUNCTIONS [J].

HU, Q ;

MEARS, CA ;

RICHARDS, PL ;

LLOYD, FL .

PHYSICAL REVIEW LETTERS, 1990, 64 (24) :2945-2948

[7] POSSIBLE NEW EFFECTS IN SUPERCONDUCTIVE TUNNELLING [J].

JOSEPHSON, BD .

PHYSICS LETTERS, 1962, 1 (07) :251-253

[8]

LIBOFF RL, 1985, TRANSMISSION LINES W, pCH4

[9] FABRICATION OF NB/AL-AL2O3/NB JUNCTIONS WITH EXTREMELY LOW LEAKAGE CURRENTS [J].

LICHTENBERGER, AW ;

MCCLAY, CP ;

MATTAUCH, RJ ;

FELDMAN, MJ ;

PAN, SK ;

KERR, AR .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :1247-1250

[10] ANALYTICAL MODEL OF HIGH-FREQUENCY RESONANT TUNNELING - THE 1ST-ORDER AC CURRENT RESPONSE [J].

LIU, HC .

PHYSICAL REVIEW B, 1991, 43 (15) :12538-12548