Vortex state in a two-gap superconductor

We discuss a flux flow resistivity in the system with two s-wave superconducting gaps. Our result agrees well with anomalous field dependence of the resistivity recently observed in the vortex state of MgB2. We comment on the possibility of the presence of vortex with irrational flux, which is repre...

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Veröffentlicht in:	Physica. C, Superconductivity Superconductivity, 2006-05, Vol.437-438, p.86-88
Hauptverfasser:	Goryo, Jun, Soma, Shingo, Matsukawa, Hiroshi
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Flux flow Irrational flux MgB2 Multi-gap structure Physics Properties of type I and type II superconductors Superconductivity Vortex lattices ,flux pinning, flux creep
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Zusammenfassung:	We discuss a flux flow resistivity in the system with two s-wave superconducting gaps. Our result agrees well with anomalous field dependence of the resistivity recently observed in the vortex state of MgB2. We comment on the possibility of the presence of vortex with irrational flux, which is represented as the unit flux times an irrational number.
ISSN:	0921-4534 1873-2143
DOI:	10.1016/j.physc.2006.03.021