Striped holographic superconductor
Striped holographic superconductor
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DOI：
10.1103/physrevd.83.064009
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发表时间：
2010-10
影响因子：
5
通讯作者：
R. Flauger;E. Pajer;S. Papanikolaou
中科院分区：
文献类型：
--
作者：
R. Flauger;E. Pajer;S. Papanikolaou
研究了3+1维Einstein-Maxwell标量理论的非齐次解。我们的结果提供了一个全息模型的超导性的存在下的电荷密度波来源于调制的化学势。我们发现，低于临界温度T{sub c}超导条纹的发展。通过计算巨正则势，我们证明了它们比正常态更受青睐。我们调查的依赖性T{sub c}上的调制的波矢量，其特征的不均匀性。我们发现，它是定性类似于预期的弱耦合巴丁-库珀-施里尔理论，但我们指出了一个定量的差异。最后，我们使用我们的解决方案，以计算电导率沿着方向的条纹。
We study inhomogeneous solutions of a 3+1-dimensional Einstein-Maxwell-scalar theory. Our results provide a holographic model of superconductivity in the presence of a charge density wave sourced by a modulated chemical potential. We find that below a critical temperature T{sub c} superconducting stripes develop. We show that they are thermodynamically favored over the normal state by computing the grand canonical potential. We investigate the dependence of T{sub c} on the modulation's wave vector, which characterizes the inhomogeneity. We find that it is qualitatively similar to that expected for a weakly coupled Bardeen-Cooper-Schrieer theory, but we point out a quantitative difference. Finally, we use our solutions to compute the conductivity along the direction of the stripes.