Influence of thermal phase fluctuations on the spectral function for a two-dimensional d-wave superconductor
Influence of thermal phase fluctuations on the spectral function for a two-dimensional d-wave superconductor
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DOI：
10.1103/physrevb.81.094514
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发表时间：
2009-10
影响因子：
3.7
通讯作者：
M. Khodas;A. Tsvelik
中科院分区：
文献类型：
--
作者：
M. Khodas;A. Tsvelik
我们研究了二维超导体在强相位波动状态下的谱函数。虽然所开发的方法对任何对称都有效，但我们集中研究d波超导体。我们得到了在转变温度以下的单电子格林函数的解析表达式，并推导出了在T{c}以上有限温度下的格林函数的外推公式。所建议的方法很容易推广到其他具有临界波动的模型。
We study the spectral function of a two-dimensional superconductor in a regime of strong phase fluctuations. Although the developed approach is valid for any symmetry, we concentrate on d -wave superconductors. We obtain analytical expressions for the single electron Green's function below the transition temperature and have worked out a way to extrapolate it for a finite temperatures above T{sub c}. The suggested approach is easily generalizable for other models with critical fluctuations.