Structure in the magnetic-field-dependent microwave absorption of Bi-Sr-Ca-Cu-O single crystals

The magnetic field dependence of the microwave absorption of Bi sub 2.1 Sr sub 1.6 CaCu sub 2 O sub x single crystals has been observed below the superconducting transition temperature. An absorption peak is observed at low fields, and the peak position and width have strong temperature and angular...

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Veröffentlicht in:	Phys. Rev. B: Condens. Matter; (United States) 1989, Vol.39 (1), p.808-810
Hauptverfasser:	PAKULIS, E. J, CHANDRASHEKHAR, G. V
Format:	Artikel
Sprache:	eng
Schlagworte:	656100 > Condensed Matter Physics-- Superconductivity ABSORPTION SPECTRA ALKALINE EARTH METAL COMPOUNDS BISMUTH COMPOUNDS BISMUTH OXIDES CALCIUM COMPOUNDS CALCIUM OXIDES CHALCOGENIDES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: electronic structure, electrical, magnetic, and optical properties COPPER COMPOUNDS COPPER OXIDES CRYSTALS Exact sciences and technology FREQUENCY RANGE GHZ RANGE GHZ RANGE 01-100 HYSTERESIS MAGNETIC FIELDS MAGNETIC FLUX MATERIALS SCIENCE MICROWAVE SPECTRA MONOCRYSTALS OXIDES OXYGEN COMPOUNDS Physics Properties of type I and type II superconductors SPECTRA STRONTIUM COMPOUNDS STRONTIUM OXIDES Superconductivity TEMPERATURE DEPENDENCE TRANSITION ELEMENT COMPOUNDS 360204 > Ceramics, Cermets, & Refractories-- Physical Properties VERY LOW TEMPERATURE
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Zusammenfassung:	The magnetic field dependence of the microwave absorption of Bi sub 2.1 Sr sub 1.6 CaCu sub 2 O sub x single crystals has been observed below the superconducting transition temperature. An absorption peak is observed at low fields, and the peak position and width have strong temperature and angular dependences. Two peaks can be resolved in some samples. Hysteresis in the low-field absorption peak indicates extremely anisotropic flux trapping in these crystals for T < 25K. Flux parallel to the c axis of the crystal is almost completely trapped, wheras flux normal to c is only weakly trapped. 8 ref.--AA
ISSN:	0163-1829 1095-3795
DOI:	10.1103/PhysRevB.39.808