Experimental study of the lower critical field in high-{Tc}-single crystals | Zendy

C. Brandstätter | Zendy; Christian G. Boehmer | Zendy; H.W. Weber | Zendy; B. W. Veal | Zendy

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Experimental study of the lower critical field in high-{Tc}-single crystals

Author(s) -

C. Brandstätter,

Christian G. Boehmer,

H.W. Weber,

B. W. Veal

Publication year - 1997

Language(s) - English

Resource type - Reports

DOI - 10.2172/510427

Subject(s) - superconductivity , squid , magnetometer , condensed matter physics , field (mathematics) , penetration depth , materials science , critical field , analytical chemistry (journal) , magnetic field , chemistry , physics , optics , mathematics , quantum mechanics , chromatography , ecology , pure mathematics , biology

Employing SQUID magnetometry and novel measuring and evaluation techniques, precise information on the first penetration field can be obtained and used to extract H{sub cl}. Tl- and Bi-based as well as a series of oxygen deficient Y-123 high {Tc} superconducting single crystals were investigated (H{parallel}c). In all cases, H{sub cl} is smaller than previously reported and can be described by BCS-theory

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