Superconducting condensate density of (La1-xCax)(Ba1.75-xLa0.25+xCu3 O7+δ polycrystals

H. Yasuoka, A. Yamaguchi, Y. Tanaka, T. Katsumata, S. Tochihara, Y. Sato, V. Petrykin, M. Osada, M. Kakihana

研究成果: Article査読

抄録

The superconducting condensate density ns of single-phase tetragonal (La1-xCax)(Ba1.75-xLa0.25+x)Cu3 O7+δ polycrystals was examined by the magnetic measurements. The samples were synthesized with the composition range 0.1≤x≤1.0 by the amorphous metal-complex method. The magnetization curves were measured by a SQUID magnetometer. The lower critical field Hc1 was obtained from the magnetization curve using the modified Kim-Anderson critical-state model, in which Hc1 was taken into consideration. We estimated ns at 0 K from the temperature dependence of Hc1. The ns value increases until x = 0.5 and decreases over x = 0.5 as x increases. Besides, ns was found to be linear to the hole density. The present relation between the transition temperature Tc and ns is compared with the results for the underdoped samples by means of muon spin relaxation.

本文言語English
ページ(範囲)311-315
ページ数5
ジャーナルPhysica C: Superconductivity and its Applications
378-381
PART 1
DOI
出版ステータスPublished - 2002 10 1
外部発表はい

ASJC Scopus subject areas

  • Condensed Matter Physics

フィンガープリント 「Superconducting condensate density of (La<sub>1-x</sub>Ca<sub>x</sub>)(Ba<sub>1.75-x</sub>La<sub>0.25+x</sub>Cu<sub>3 </sub>O<sub>7+δ</sub> polycrystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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