Local magnetic relaxation close to the second peak in BSCCO crystals

被引：9

作者：

Berry, S

Konczykowski, M

Kes, PH

Zeldov, E

机构：

[1] LEIDEN UNIV,KAMERLINGH ONNES LAB,NL-2300 RA LEIDEN,NETHERLANDS

[2] WEIZMANN INST SCI,DEPT CONDENSED MATTER PHYS,IL-76100 REHOVOT,ISRAEL

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)80005-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Local magnetic relaxation measurements were performed on Bi2Sr2CaCu2O8+x (BSCCO) single crystals using a Hall-sensor array. The recorded field profiles provide unambiguous evidence of a crossover from surface barrier to bulk pinning in the second magnetization peak region. Both contributions to the magnetization exhibit a pronounced relaxation. For fields above the second peak we observe an additional crossover from bulk-pinning at short time scales, with Bean-like profiles, to dome-shape profiles originating from surface barrier at long times.

引用

页码：2259 / 2260

页数：2

共 5 条

[1] ELECTRON-IRRADIATION EFFECT ON THE DOUBLE HUMP MAGNETIZATION LOOP IN BSCCO CRYSTALS [J].

CHIKUMOTO, N ;

KONCZYKOWSKI, M ;

MOTOHIRA, N ;

KISHIO, K ;

KITAZAWA, K .

PHYSICA C, 1991, 185 :2201-2202

[2] FLUX-CREEP CROSSOVER AND RELAXATION OVER SURFACE BARRIERS IN BI2SR2CACU2O8 CRYSTALS [J].

CHIKUMOTO, N ;

KONCZYKOWSKI, M ;

MOTOHIRA, N ;

MALOZEMOFF, AP .

PHYSICAL REVIEW LETTERS, 1992, 69 (08) :1260-1263

[3] NATURE OF THE IRREVERSIBILITY LINE IN BI2SR2CACU2O8 [J].

ZELDOV, E ;

MAJER, D ;

KONCZYKOWSKI, M ;

LRKIN, AI ;

VINOKUR, VM ;

GESHKENBEIN, VB ;

CHIKUMOTO, N ;

SHTRIKMAN, H .

EUROPHYSICS LETTERS, 1995, 30 (06) :367-372

[4] THERMODYNAMIC OBSERVATION OF FIRST-ORDER VORTEX-LATTICE MELTING TRANSITION IN BI2SR2CACU2O8 [J].

ZELDOV, E ;

MAJER, D ;

KONCZYKOWSKI, M ;

GESHKENBEIN, VB ;

VINOKUR, VM ;

SHTRIKMAN, H .

NATURE, 1995, 375 (6530) :373-376

[5] GEOMETRICAL BARRIERS IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

ZELDOV, E ;

LARKIN, AI ;

GESHKENBEIN, VB ;

KONCZYKOWSKI, M ;

MAJER, D ;

KHAYKOVICH, B ;

VINOKUR, VM ;

SHTRIKMAN, H .

PHYSICAL REVIEW LETTERS, 1994, 73 (10) :1428-1431

← 1 →