Magnetic-field induced superconductor-insulator transition in the La2-xSrxCuO4 system

被引：33

作者：

Karpinska, K ^{[1
]}

Malinowski, A ^{[1
]}

Cieplak, MZ ^{[1
]}

Guha, S ^{[1
]}

Gershman, S ^{[1
]}

Kotliar, G ^{[1
]}

Skoskiewicz, T ^{[1
]}

Plesiewicz, W ^{[1
]}

Berkowski, M ^{[1
]}

Lindenfeld, P ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,DEPT PHYS & ASTRON,PISCATAWAY,NJ 08855

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.77.3033

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetoresistance of underdoped La2-xSrxCuO films with x = 0.048 and 0.051 is studied in magnetic fields up to 8.5 T and at temperatures down to 30 mK. The results indicate that the magnetic-field induced superconductor-insulator (SI) transition is qualitatively different from the reentrant transition described for indium oxide and interpreted as leading to a ''bosonic insulator'' phase. The ground state in the absence of superconductivity appears to be insulating. The transitions become narrower below 1 K and show that the resistive critical field diverges approaching zero temperature, as has also been observed in other high-T-c systems.

引用

页码：3033 / 3036

页数：4

共 27 条

[1] BOSE-EINSTEIN CONDENSATION OF CHARGED BOSONS IN A MAGNETIC-FIELD [J].

ALEXANDROV, AS .

PHYSICAL REVIEW B, 1993, 48 (14) :10571-10574

[2] BIPOLARONIC SUPERCONDUCTIVITY - THERMODYNAMICS, MAGNETIC-PROPERTIES, AND POSSIBILITY OF EXISTENCE IN REAL SUBSTANCES [J].

ALEXANDROV, AS ;

RANNINGER, J ;

ROBASZKIEWICZ, S .

PHYSICAL REVIEW B, 1986, 33 (07) :4526-4542

[3] LOGARITHMIC DIVERGENCE OF BOTH INPLANE AND OUT-OF-PLANE NORMAL-STATE RESISTIVITIES OF SUPERCONDUCTING LA2-XSRXCUO4 IN THE ZERO-TEMPERATURE LIMIT [J].

ANDO, Y ;

BOEBINGER, GS ;

PASSNER, A ;

KIMURA, T ;

KISHIO, K .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4662-4665

[4]

Cieplak Maria Z., 1992, PHYS REV B, V46, P5536

[5] THICKNESS DEPENDENCE OF LA2-XSRXCUO4 FILMS [J].

CIEPLAK, MZ ;

BERKOWSKI, M ;

GUHA, S ;

CHENG, E ;

VAGELOS, AS ;

RABINOWITZ, DJ ;

WU, B ;

TROFIMOV, IE ;

LINDENFELD, P .

APPLIED PHYSICS LETTERS, 1994, 65 (26) :3383-3385

[6] LOW-TEMPERATURE INCREASE OF RESISTIVE CRITICAL FIELDS IN CERTAIN SUPERCONDUCTORS - A SIMPLE FLUCTUATION APPROACH [J].

COOPER, JR ;

LORAM, JW ;

WADE, JM .

PHYSICAL REVIEW B, 1995, 51 (09) :6179-6182

[7] UPPER CRITICAL-FIELD IN A SPIN-CHARGE-SEPARATED SUPERCONDUCTOR [J].

DIAS, RG ;

WHEATLEY, JM .

PHYSICAL REVIEW B, 1994, 50 (18) :13887-13889

[8] QUANTUM PHASE-TRANSITIONS IN DISORDERED 2-DIMENSIONAL SUPERCONDUCTORS [J].

FISHER, MPA .

PHYSICAL REVIEW LETTERS, 1990, 65 (07) :923-926

[9] MAGNETIC-FIELD-TUNED SUPERCONDUCTOR-INSULATOR TRANSITION IN 2-DIMENSIONAL FILMS [J].

HEBARD, AF ;

PAALANEN, MA .

PHYSICAL REVIEW LETTERS, 1990, 65 (07) :927-930

[10] MAGNETIC-FIELD ENHANCED ORDER-PARAMETER AMPLITUDE FLUCTUATIONS IN ULTRATHIN FILMS NEAR THE SUPERCONDUCTOR-INSULATOR TRANSITION [J].

HSU, SY ;

CHERVENAK, JA ;

VALLES, JM .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :132-135

← 1 2 3 →