...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >SmB_6 electron-phonon coupling constant from time- and angle-resolved photoelectron spectroscopy
【24h】

SmB_6 electron-phonon coupling constant from time- and angle-resolved photoelectron spectroscopy

机译：来自时间分辨和角度分辨光电子能谱的SmB_6电子-声子耦合常数

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

SmB_6 is a mixed valence Kondo system resulting from the hybridization between localized f electrons and delocalized d electrons. We have investigated its out-of-equilibrium electron dynamics by means of time-and angle-resolved photoelectron spectroscopy. The transient electronic population above the Fermi level can be described by a time-dependent Fermi-Dirac distribution. By solving a two-temperature model that well reproduces the relaxation dynamics of the effective electronic temperature, we estimate the electron-phonon coupling constant X to range from 0.13 ± 0.03 to 0.04 ± 0.01. These extremes are obtained assuming a coupling of the electrons with either a phonon mode at 10 or 19 meV. A realistic value of the average phonon energy will give an actual value of λ within this range. Our results provide an experimental report on the material electron-phonon coupling, contributing to both the electronic transport and the macroscopic thermodynamic properties of SmB_6.
机译：SmB_6是一个混合价近藤系统，它是由局域f电子和局域d电子之间的杂交产生的。我们已经通过时间和角度分辨光电子能谱研究了其失衡的电子动力学。费米能级以上的瞬态电子种群可以通过随时间变化的费米-狄拉克分布来描述。通过求解很好地再现有效电子温度的弛豫动力学的两个温度模型，我们估计电子-声子耦合常数X的范围为0.13±0.03至0.04±0.01。假设电子以10 meV或19 meV的声子模式耦合将获得这些极值。平均声子能量的实际值将给出该范围内的λ的实际值。我们的结果提供了关于材料电子-声子耦合的实验报告，有助于电子传输和SmB_6的宏观热力学性质。

著录项

  • 来源
    《Physical review》 |2016年第8期|081111.1-081111.6|共6页
  • 作者

    A. Sterzi; A. Crepaldi; F. Cilento; G. Manzoni; E. Frantzeskakis; M. Zacchigna; E. van Heumen; Y. K. Huang; M. S. Golden; F. Parmigiani;

  • 作者单位

    Universita degli Studi di Trieste, Via A. Valerio 2,I-34127 Trieste, Italy;

    Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5,I-34149 Trieste, Italy,Institute of Physics, Ecole Polytechnique Federate de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;

    Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5,I-34149 Trieste, Italy;

    Universita degli Studi di Trieste, Via A. Valerio 2,I-34127 Trieste, Italy;

    Van der Waals-Zeeman Institute, Institute of Physics (loP), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands,CSNSM, Universite Paris-Sud, CNRS/IN2P3, Universite Paris-Saclay, F-91405 Orsay, France;

    CNR-IOM, Strada Statale 14, km 163.5,I-34149 Trieste, Italy;

    Van der Waals-Zeeman Institute, Institute of Physics (loP), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands;

    Van der Waals-Zeeman Institute, Institute of Physics (loP), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands;

    Van der Waals-Zeeman Institute, Institute of Physics (loP), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands;

    Universita degli Studi di Trieste, Via A. Valerio 2,I-34127 Trieste, Italy,Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5,I-34149 Trieste, Italy,International Faculty, University of Cologne, D-50937 Cologne, Germany;

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

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