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arXiv 1607.07552cond-mat.str-elcond-mat.dis-nn
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二维半狄拉克费米子系统中库仑相互作用与无序的相互作用

Interplay of Coulomb interaction and disorder in a two-dimensional semi-Dirac fermion system

Peng-Lu Zhao, Jing-Rong Wang, An-Min Wang, Guo-Zhu Liu

摘要:

最近发现,库仑相互作用可以在二维各向异性Weyl半金属中诱导出一系列非平凡的光谱和输运性质。与通常的费米液体不同,该系统中的库仑相互作用使得费米液体描述在很宽的能量范围内失效。本文对库仑相互作用和淬火无序的相互作用进行了系统的重整化群分析,指出它们之间存在着实质性的相互作用,从而导致了各种量子相变和非费米液体行为。系统的低能物理敏感地依赖于库仑相互作用和无序的有效强度。

英文摘要:

It was recently found that Coulomb interaction can induce a series of nontrivial spectral and transport properties in a two-dimensional anisotropic Weyl semimetal. Different from graphehe that is basically an ordinary Fermi liquid, the Coulomb interaction in this system makes the Fermi liquid description invalid over a wide range of energy scales. We present a systematic renormalization group analysis of the interplay of Coulomb interaction and quenched disorder, and show that they have substantial mutual effects on each other, which then leads to a variety of quantum phase transitions and non-Fermi liquid behaviors. The low-energy physics of the system depends sensitively on the effective strength of Coulomb interaction and disorder.

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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