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Fate of quasiparticles in the superconducting state

机译:准粒子在超导状态下的命运

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摘要

Quasiparticle properties in the superconducting state are masked by the superfluid and are not directly accessible to infrared spectroscopy. We show how one can use a Kramers-Kronig transformation to separate the quasiparticle from superfluid response and extract intrinsic quasiparticle properties in the superconducting state. We also address the issue of a narrow quasiparticle peak observed in microwave measurements, and demonstrate how it can be combined with infrared measurements to obtain a unified picture of electrodynamic properties of cuprate superconductors.
机译:在超导状态下的准粒子特性被超流体所掩盖,并且红外光谱无法直接获得。我们展示了如何使用Kramers-Kronig变换将超流体响应中的准粒子分离,并在超导状态下提取内在的准粒子特性。我们还解决了在微波测量中观察到的窄准粒子峰的问题,并演示了如何将其与红外测量结合使用以获得铜酸盐超导体电动力特性的统一图片。

著录项

  • 来源
    《Physical review》 |2014年第17期|174508.1-174508.6|共6页
  • 作者单位

    Department of Physics, The University of Akron, Akron, Ohio 44325, USA Departement de Physique de la Matiere Condensee, Universite de Geneve, Quai Ernest-Ansermet 24, 1211 Geneve 4, Switzerland;

    Departement de Physique de la Matiere Condensee, Universite de Geneve, Quai Ernest-Ansermet 24, 1211 Geneve 4, Switzerland;

    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA;

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

    solid metals and alloys; cuprate superconductors (high-Tc and insulating parent compounds);

    机译:固体金属和合金;铜酸盐超导体(高Tc和绝缘母体化合物);

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