Vortex-lattice melting in Nb

Detailed measurements and analysis of the temperature and magnetic field dependence of the magnetization and the magnetic relaxation of niobium films have been carried out. An irreversibility line has been identified, below which the remanent magnetization was found to decay logarithmically in time....

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Veröffentlicht in:	Physical review letters 1993-04, Vol.70 (14), p.2162-2165
Hauptverfasser:	SCHMIDT, M. F, ISRAELOFF, N. E, GOLDMAN, A. M
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Metals. Metallurgy Physics Superconducting films and low-dimensional structures Superconductivity
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Beschreibung
Zusammenfassung:	Detailed measurements and analysis of the temperature and magnetic field dependence of the magnetization and the magnetic relaxation of niobium films have been carried out. An irreversibility line has been identified, below which the remanent magnetization was found to decay logarithmically in time. The data were quantitatively compared to predictions of flux creep, vortex glass, and vortex-lattice-melting models. Only the vortex-lattice-melting model self-consistently explained the data.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.70.2162