...
首页> 外文期刊>Physical review >Pressure-induced superconductivity in EuFe_2As_2 without a quantum critical point: Magnetotransport and upper critical field measurements under high pressure
【24h】

Pressure-induced superconductivity in EuFe_2As_2 without a quantum critical point: Magnetotransport and upper critical field measurements under high pressure

机译:EuFe_2As_2中无量子临界点的压力诱导超导:高压下的磁传输和上临界场测量

获取原文
获取原文并翻译 | 示例
           

摘要

Resistivity and Hall effect measurements of EuFe_2As_2 up to 3.2 GPa indicate no divergence of quasiparticle effective mass at the pressure P_c where the magnetic and structural transition disappears. This is corroborated by analysis of the temperature (T) dependence of the upper critical field. T-linear resistivity is observed at pressures slightly above P_c. The scattering rates for both electrons and holes are shown to be approximately T-linear. When a field is applied, a T~2 dependence is recovered, indicating that the origin of the T-linear dependence is spin fluctuations.
机译:EuFe_2As_2的电阻率和霍尔效应测量值高达3.2 GPa,表明在压力P_c处磁和结构转变消失的准粒子有效质量没有发散。通过分析上限温度对温度(T)的依赖性,可以证实这一点。在略高于P_c的压力下观察到T线性电阻率。电子和空穴的散射速率都显示为近似T线性。当施加磁场时,恢复到T〜2依赖性,表明T-线性依赖性的起源是自旋波动。

著录项

  • 来源
    《Physical review》 |2013年第22期|224510.1-224510.7|共7页
  • 作者单位

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan,JST, Transformative Research-Project on Iron Pnictides (TRIP), Chiyoda, Tokyo 102-0075, Japan;

    Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan,Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-0003, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan;

    Department of Physics, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan,JST, Transformative Research-Project on Iron Pnictides (TRIP), Chiyoda, Tokyo 102-0075, Japan,Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-0003, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan,JST, Transformative Research-Project on Iron Pnictides (TRIP), Chiyoda, Tokyo 102-0075, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mixed states, critical fields, and surface sheaths; superconductivity phase diagrams; pressure effects;

    机译:混合态;临界场和表面鞘;超导相图;压力效应;

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