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Titolo:
TEMPERATURE AND DOPING DEPENDENCE OF THE PENETRATION DEPTH IN BI2SR2CACU2O8+DELTA
Autore:
WALDMANN O; STEINMEYER F; MULLER P; NEUMEIER JJ; REGI FX; SAVARY H; SCHNECK J;
Indirizzi:
UNIV ERLANGEN NURNBERG,INST PHYS 3,ERWIN ROMMEL STR 1 D-91058 ERLANGEN GERMANY WALTHER MEISSNER INST TIEFTEMP FORSCH D-85748 GARCHING GERMANY LOS ALAMOS NATL LAB LOS ALAMOS NM 87545 CTR NATL ETUD TELECOMMUN,FRANCE TELECOM F-92220 BAGNEUX FRANCE
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 17, volume: 53, anno: 1996,
pagine: 11825 - 11830
SICI:
0163-1829(1996)53:17<11825:TADDOT>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
D-WAVE SUPERCONDUCTOR; SINGLE-CRYSTALS; REVERSIBLE MAGNETIZATION; LAYERED SUPERCONDUCTORS; OXYGEN-CONTENT; FIELD; TC; YBA2CU3O7-DELTA; YBA2CU3O6.95; TRANSITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
O. Waldmann et al., "TEMPERATURE AND DOPING DEPENDENCE OF THE PENETRATION DEPTH IN BI2SR2CACU2O8+DELTA", Physical review. B, Condensed matter, 53(17), 1996, pp. 11825-11830

Abstract

Using torque magnetometry in the Shubnikov state, we have studied theLondon penetration depth lambda(ab)(T) of Bi2Sr2CaCu2O8+delta and (PbxBi1-x)(2)Sr2CaCu2O8+delta single crystals with different oxygen excess delta. With increasing charge carrier density n(s)/mproportional to1/lambda(ab)(2)(0) the transition temperature at first increases, then approaches a maximum, and finally decreases. The sample independent,universal behavior found in the 1:2:3 family is not confirmed. Dependent on preparation prehistory of the samples, either linear or quadratic low temperature behavior of lambda(ab)(T) was observed. A linear term is seen for samples with high maximum T-c approximate to 94 K, while samples with quadratic behavior show a significantly reduced T-c. The results are discussed in terms of d-wave superconductivity with resonant impurity scattering.

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Documento generato il 24/09/20 alle ore 04:51:43