Theory of a continuous stripe melting transition in a two-dimensional metal: a possible application to cuprate superconductors.
Theory of a continuous stripe melting transition in a two-dimensional metal: a possible application to cuprate superconductors.
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二维金属中连续条带熔化转变的理论：在铜酸盐超导体中的可能应用。
DOI：
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发表时间：
2012
影响因子：
8.6
通讯作者：
T. Senthil
中科院分区：
文献类型：
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作者：
David F. Mross;T. Senthil
我们构造了二维金属中连续条纹熔化量子相变的理论和与之相关的费米面重构。这种相变是强耦合的，但在条带有序被电荷条带有序的双位错扩散破坏的情况下，理论上是容易处理的。由此得到的非朗道量子临界点具有强烈的条纹涨落，即使静态的条纹有序重构了费米面，我们也显示了它与费米面的动态解耦。我们讨论了铜氧化物中各种条纹现象的联系。我们指出了关于铜酸盐中奇异条纹波动的旧实验结果[G.Aeppli等人，Science 278,1432(1997)]的几个令人费解的方面，并在我们的理论中提供了一个可能的解释。因此，这些结果可能是第一次在实验中观察到非朗道量子临界性。
We construct a theory of continuous stripe melting quantum phase transitions in two-dimensional metals and the associated Fermi surface reconstruction. Such phase transitions are strongly coupled but yet theoretically tractable in situations where the stripe ordering is destroyed by proliferating doubled dislocations of the charge stripe order. The resulting non-Landau quantum critical point has strong stripe fluctuations which we show decouple dynamically from the Fermi surface even though static stripe ordering reconstructs the Fermi surface. We discuss connections to various stripe phenomena in the cuprates. We point out several puzzling aspects of old experimental results [G. Aeppli et al., Science 278, 1432 (1997)] on singular stripe fluctuations in the cuprates, and provide a possible explanation within our theory. These results may thus have been the first observation of non-Landau quantum criticality in an experiment.