Magnetically induced metallic phase in superconducting tantalum films
Yongguang Qin, Carlos L. Vicente, Jongsoo Yoon
DOI 10.1103/PhysRevB.73.100505 · Physical Review B
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Abstract
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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ta Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.23 | Pressure not reported | midpoint |
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