Magnetically Induced Metallic Phase in Superconducting Tantalum Films

Details Magnetically Induced Metallic Phase in Superconducting Tantalum Films Magnetically Induced Metallic Phase in Superconducting Tantalum Films

2006-01-20

arxiv.org/abs/cond-mat/0601460v1

Physics

Condensed Matter

Superconductivity

four pages, four figures

Scientific paper

10.1103/PhysRevB.73.100505

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.

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