Low-temperature transport measurements of superconductors and semiconductors in magnetic fields to 800 T

被引：7

作者：

Dzurak, AS ^{[1
]}

Kane, BE

Clark, RG

Lumpkin, NE

O'Brien, JL

Facer, GR

Starrett, RP

Skougarevsky, A

Nakagawa, H

Miura, N

Rickel, DG

Goettee, JD

Campbell, LJ

Fowler, CM

Mielke, C

King, JC

Zerwekh, WD

Clark, D

Bartram, BD

von Ortenberg, M

Herlach, F

Yokoi, H

Bykov, AI

Tatsenko, OM

Platonov, VV

Mitchell, EE

Hermann, J

Muller, KH

Maranowski, KD

Gossard, AC

机构：

[1] Univ New S Wales, Sch Phys, Natl Pulsed Magnet Lab, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Phys, Semicond Nanofabricat Facil, Sydney, NSW 2052, Australia

[3] Univ Tokyo, Inst Solid State Phys, Tokyo 106, Japan

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[5] Humboldt Univ, D-10115 Berlin, Germany

[6] Katholieke Univ Leuven, B-3001 Louvain, Belgium

[7] Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan

[8] All Russian Res Inst Expt Phys, Arzamas 607200 16, Russia

[9] CSIRO, Div Telecommun & Ind Phys, Epping, NSW 2121, Australia

[10] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

来源：

PHYSICA B-CONDENSED MATTER | 1998年 / 246卷

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

megagauss pulsed magnetic field; high-T-c superconductor; parabolic quantum well;

D O I：

10.1016/S0921-4526(98)00046-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Recent innovations in sample lithography and measurement techniques have made possible electrical transport measurements on both high-T-c superconductor and semiconductor samples in the harsh environment of implosively generated magnetic fields B up to 800 T, with reliable data obtained up to 300 T. Thin films of the cuprate superconductor YBa2Cu3O7-delta have been studied with B directed parallel to the CuO planes (J parallel to B perpendicular to c-axis). At an ambient temperature of 1.6 K and a probe frequency of 0.9 GHz we find an onset of dissipation at B-on = (150 +/- 20) T, the highest field yet reported. In addition, the measured upper critical held B-c2 = (240 +/- 30) T is significantly above the paramagnetic limit for this material. Measurements on AlxGa1-xAs/GaAs parabolic quantum well structures, designed to probe the existence of a magnetically induced triplet superconducting phase, and on HgSe:Fe samples are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：40 / 49

页数：10