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首页> 外文期刊>Solid State Communications >Universal superconducting and magnetic properties of the (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy system: a mu SR investigation
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Universal superconducting and magnetic properties of the (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy system: a mu SR investigation

机译：Universal superconducting and magnetic properties of the (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy system: a mu SR investigation

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摘要

The (CaxLa1-x)(Ba1.75-xLa0.25+x) Cu3Oy, system is ideal for testing theories of high temperature superconductivity, since nearly the full range of doping is controlled by y, and T-c(max) is continuously controlled by x, with minimal structural changes. We investigate this system with both transverse and longitudinal field muSR. This allows us to re-examine the Uemura relation, the nature of the spontaneous magnetic fields below T-c, and the relation between their appearance temperature T-g and T-c(max). Our major findings are: (1) the Uemura relation is respected by this system more adequately than by other cuprates, (2) T-g and T-c are controlled by the same energy scale, (3) the phase separation between hole poor and hole rich regions is a microscopic one, and (4) spontaneous magnetic fields appear gradually with no moment size evolution. (C) 2003 Elsevier Science Ltd. All rights reserved. References: 28

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