...
首页> 外文期刊>Physica, C. Superconductivity and its applications >Pressure dependence of T sub(c) in strongly underdoped YBa sub(2)Cu sub(3)O sub(6.41) as a function of pressure-temperature history
【24h】

Pressure dependence of T sub(c) in strongly underdoped YBa sub(2)Cu sub(3)O sub(6.41) as a function of pressure-temperature history

机译:重掺杂YBa sub(2)Cu sub(3)O sub(6.41)中T sub(c)的压力依赖性与压力-温度历史的关系

获取原文
获取原文并翻译 | 示例
           

摘要

The dependence of the superconducting transition temperature T sub(c)(P) of strongly underdoped YBa sub(2)Cu sub(3)O sub(6.41) [T sub(c)(1 bar) approximately 14 K] on hydrostatic pressure is determined to 7 GPa in an ac susceptibility measurement in a diamond-anvil-cell loaded with dense helium as pressure medium. T sub(c)(P) is found to depend markedly on the temperature-pressure history due to the importance of relaxation processes in the oxygen sublattice. The relaxation time tau increases exponentially with pressure, corresponding to an activation volume of +4.2 cm super(3) mol. The `intrinsic' T sub(c)(P)-dependence (that devoid of relaxation effects) is determined whereby T sub(c) initially increases with pressure, passes through a maximum near 17 K at 2 GPa, and falls below 1.6 K above 7 GPa.
机译:高度欠掺杂的YBa sub(2)Cu sub(3)O sub(6.41)[T sub(c)(1 bar)大约14 K]的超导转变温度T sub(c)(P)对静水压的依赖性在装有致密氦气作为压力介质的金刚石-砧室中,在磁化率测量中将其确定为7 GPa。由于氧亚晶格中弛豫过程的重要性,发现T sub(c)(P)明显取决于温度-压力历史。弛豫时间tau随压力呈指数增加,对应于+4.2 cm super(3)mol的活化体积。确定“固有的” T sub(c)(P)依赖性(没有松弛效应),由此T sub(c)最初随压力增加,在2 GPa处通过最大接近17 K,然后降至1.6 K以下高于7 GPa。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号