Focal voltage-current characteristics in high-Tc superconductors

被引：12

作者：

Giller, D ^{[1
]}

Abulafia, Y ^{[1
]}

Prozorov, R ^{[1
]}

Wolfus, Y ^{[1
]}

Shaulov, A ^{[1
]}

Yeshurun, Y ^{[1
]}

机构：

[1] Bar Ilan Univ, Dept Phys, Inst Superconduct, IL-52900 Ramat Gan, Israel

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.57.R14080

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Local electric field versus current density (E-j) curves were measured in YBa2Cu3O7-delta and Nd1.85Ce0.15CuO4-delta single crystals using a miniature Hall-sensors array. Measurements in the field range corresponding to the anomalous magnetization peak in these crystals reveal remarkably different E-j characteristics below and above the peak, indicating a crossover in the flux-creep mechanism. Similar E-j behavior, as observed here in YBa2Cu3O7-delta and Nd1.85Ce0.15CuO4-delta, is expected universally in every superconductor exhibiting the anomalous peak.

引用

页码：R14080 / R14083

页数：4

共 36 条

[1] Investigation of flux creep in high-T-c superconductors using Hall-sensor array [J].

Abulafia, Y ;

Giller, D ;

Wolfus, Y ;

Shaulov, A ;

Yeshurun, Y ;

Majer, D ;

Zeldov, E ;

Peng, JL ;

Greene, RL .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :4944-4946

[2] LOCAL MAGNETIC-RELAXATION IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

ABULAFIA, Y ;

SHAULOV, A ;

WOLFUS, Y ;

PROZOROV, R ;

BURLACHKOV, L ;

YESHURUN, Y ;

MAJER, D ;

ZELDOV, E ;

VINOKUR, VM .

PHYSICAL REVIEW LETTERS, 1995, 75 (12) :2404-2407

[3] Plastic vortex creep in YBa2Cu3O7-x crystals [J].

Abulafia, Y ;

Shaulov, A ;

Wolfus, Y ;

Prozorov, R ;

Burlachkov, L ;

Yeshurun, Y ;

Majer, D ;

Zeldov, E ;

Wuhl, H ;

Geshkenbein, VB ;

Vinokur, VM .

PHYSICAL REVIEW LETTERS, 1996, 77 (08) :1596-1599

[4]

ABULAFIA Y, 1996, LOW TEMP PHYS, V107, P455

[5] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[6] SQUARE AND RECTANGULAR THIN SUPERCONDUCTORS IN A TRANSVERSE MAGNETIC-FIELD [J].

BRANDT, EH .

PHYSICAL REVIEW LETTERS, 1995, 74 (15) :3025-3028

[7] Electric field in superconductors with rectangular cross section [J].

Brandt, EH .

PHYSICAL REVIEW B, 1995, 52 (21) :15442-15457

[8] SCANNING HALL MICROPROBE MEASUREMENTS OF MAGNETIZATION PROFILES IN YBA2CU3O7-Y SINGLE-CRYSTALS [J].

BRAWNER, DA ;

ONG, NP .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (08) :3890-3902

[9] SCANNING HALL PROBE MICROSCOPY [J].

CHANG, AM ;

HALLEN, HD ;

HARRIOTT, L ;

HESS, HF ;

KAO, HL ;

KWO, J ;

MILLER, RE ;

WOLFE, R ;

VANDERZIEL, J ;

CHANG, TY .

APPLIED PHYSICS LETTERS, 1992, 61 (16) :1974-1976

[10] OXYGEN-DEFECT FLUX PINNING, ANOMALOUS MAGNETIZATION AND INTRAGRAIN GRANULARITY IN YBA2CU3O7-DELTA [J].

DAEUMLING, M ;

SEUNTJENS, JM ;

LARBALESTIER, DC .

NATURE, 1990, 346 (6282) :332-335

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