Magnetically induced metallic phase in superconducting tantalum films

被引：87

作者：

Qin, YG ^{[1
]}

Vicente, CL ^{[1
]}

Yoon, J ^{[1
]}

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.73.100505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the electronic transport properties of homogeneously disordered superconducting tantalum thin films in magnetic fields. The films exhibit three distinct transport regimes in the zero temperature limit, which we identify as superconducting, metallic, and insulating phases. The metallic phase is unexpected. The transport characteristics of this metallic phase are found to be similar to those of MoGe films, and high mobility dilute two-dimensional electrons or holes confined in semiconductor interface or transistor geometry.

引用

页数：4

共 26 条

[1] Colloquium:: Metallic behavior and related phenomena in two dimensions [J].

Abrahams, E ;

Kravchenko, SV ;

Sarachik, MP .

REVIEWS OF MODERN PHYSICS, 2001, 73 (02) :251-266

[2] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].

ABRAHAMS, E ;

ANDERSON, PW ;

LICCIARDELLO, DC ;

RAMAKRISHNAN, TV .

PHYSICAL REVIEW LETTERS, 1979, 42 (10) :673-676

[3] Phase glass is a Bose metal: A new conducting state in two dimensions [J].

Dalidovich, D ;

Phillips, A .

PHYSICAL REVIEW LETTERS, 2002, 89 (02)

[4] Interaction-induced Bose metal in two dimensions [J].

Dalidovich, D ;

Phillips, P .

PHYSICAL REVIEW B, 2001, 64 (05) :0525071-0525074

[5] Bose metal: Gauge-field fluctuations and scaling for field-tuned quantum phase transitions [J].

Das, D ;

Doniach, S .

PHYSICAL REVIEW B, 2001, 64 (13)

[6] Observation of quantum dissipation in the vortex state of a highly disordered superconducting thin film [J].

Ephron, D ;

Yazdani, A ;

Kapitulnik, A ;

Beasley, MR .

PHYSICAL REVIEW LETTERS, 1996, 76 (09) :1529-1532

[7] PINNING AND CREEP IN LAYERED SUPERCONDUCTORS [J].

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI .

PHYSICA C, 1990, 167 (1-2) :177-187

[8]

FINKELSHTEIN AM, 1987, JETP LETT+, V45, P46

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

FISHER, MPA .

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

[10] PRESENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS - UNIVERSAL RESISTANCE AT THE SUPERCONDUCTOR-INSULATOR TRANSITION [J].

FISHER, MPA ;

GRINSTEIN, G ;

GIRVIN, SM .

PHYSICAL REVIEW LETTERS, 1990, 64 (05) :587-590

← 1 2 3 →