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arXiv 0911.4486cond-mat.str-elcond-mat.supr-con
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涨落驱动的T=0附近二维条纹到费米液体转变的一级行为

Fluctuation-driven first order behavior near the T=0 two dimensional stripe to fermi liquid transition

A. J. Millis

摘要:

的可能性进行了调查,在不同的自旋相关的有序波矢量的波动之间的竞争可能会影响量子相变之间的费米液体和纵向自旋密度波状态,特别是产生一个中间的“π”状态与破缺的旋转对称性,但未破缺的平移对称性。在边缘尺寸的磁跃迁被发现抢占了一阶跃迁,但弱对称性破缺场恢复了二阶磁跃迁与中间制度,其中相关性大大提高了破缺的旋转对称性。与最近的实验进行了比较。

英文摘要:

The possibility is investigated that competition between fluctuations at different symmetry-related ordering wave vectors may affect the quantum phase transition between a fermi liquid and a longitudinal spin density wave state, in particular giving rise to an intermediate 'nematic' state with broken rotational symmetry but unbroken translational symmetry. At the marginal dimension the nematic transition is found to be preempted by a first order transition but a weak symmetry breaking field restores a second order magnetic transition with an intermediate regime in which correlations substantially enhance the broken rotational symmetry. Comparison to recent experiments is made.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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