CURRENT-VOLTAGE CHARACTERISTICS OF DC VOLTAGE BIASED HIGH-TEMPERATURE SUPERCONDUCTING MICROBRIDGES

被引：31

作者：

POULIN, GD

LACHAPELLE, J

MOFFAT, SH

HEGMANN, FA

PRESTON, JS

机构：

[1] Dept. of Engineering Physics, McMaster University, Hamilton, Ont., L8S 4L7

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 19期

关键词：

D O I：

10.1063/1.113506

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the dc current-voltage characteristic of high temperature superconducting microbridges. When a dc voltage is applied to a microbridge, it switches to a lossy state due to the formation of a hotspot in the bridge. We have measured the length and temperature of the hotspot as a function of the applied voltage, and have developed a thermal model to explain its steady state behavior. The hotspot has a flat-topped temperature profile, with the maximum temperature independent of the applied voltage. The length of the hotspot, and hence the bridge resistance, increases linearly with the applied bias, so the current is independent of the applied voltage once switching has occurred.© 1995 American Institute of Physics.

引用

页码：2576 / 2578

页数：3

共 10 条

[1] THE FLUX-LINE-LATTICE IN HIGH-T(C) SUPERCONDUCTORS [J].

BRANDT, EH .

JOURNAL OF SUPERCONDUCTIVITY, 1993, 6 (04) :201-217

[2] THE RESISTIVE HOTSPOT AND VOLTAGE-CURRENT CHARACTERISTICS IN THIN Y-Ba-Cu-O FILMS [J].

Fix, A. Sh. ;

Maksimov, I. L. ;

Morozov, K. V. ;

Osipov, V. V. .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) :1608-1611

[3] SELF-HEATING IN NORMAL METALS AND SUPERCONDUCTORS [J].

GUREVICH, AV ;

MINTS, RG .

REVIEWS OF MODERN PHYSICS, 1987, 59 (04) :941-999

[4] ANISOTROPY OF THE THERMAL-CONDUCTIVITY OF YBA2CU3O7-Y [J].

HAGEN, SJ ;

WANG, ZZ ;

ONG, NP .

PHYSICAL REVIEW B, 1989, 40 (13) :9389-9392

[5] DISSIPATIVE FLUX MOTION IN YBA2CU3O7-DELTA FILMS - INVESTIGATION BY MEANS OF TRANSPORT-I-V CURVES [J].

LEGHISSA, M ;

KONIGER, A ;

LIPPERT, M ;

DORSCH, W ;

KRAUS, M ;

SAEMANNISCHENKO, G .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1993, 92 (02) :163-172

[6] THERMAL-BOUNDARY RESISTANCE AND DIFFUSIVITY MEASUREMENTS ON THIN YBA2CU3O7-X FILMS WITH MGO AND SRTIO3 SUBSTRATES USING THE TRANSIENT GRATING METHOD [J].

MARSHALL, CD ;

TOKMAKOFF, A ;

FISHMAN, IM ;

EOM, CB ;

PHILLIPS, JM ;

FAYER, MD .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (02) :850-857

[7] THERMAL-BOUNDARY RESISTANCE FOR YBA2CU3O7-DELTA FILMS [J].

NAHUM, M ;

VERGHESE, S ;

RICHARDS, PL ;

CHAR, K .

APPLIED PHYSICS LETTERS, 1991, 59 (16) :2034-2036

[8] DISSIPATIVE FLUX MOTION IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

PALSTRA, TTM ;

BATLOGG, B ;

VANDOVER, RB ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW B, 1990, 41 (10) :6621-6632

[9]

POULIN GD, IN PRESS IEEE T APPL

[10] SELF-HEATING HOTSPOTS IN SUPERCONDUCTING THIN-FILM MICROBRIDGES [J].

SKOCPOL, WJ ;

BEASLEY, MR ;

TINKHAM, M .

JOURNAL OF APPLIED PHYSICS, 1974, 45 (09) :4054-4066

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