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arXiv 1012.5677cond-mat.str-el
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稳定部分子费米面Kitaev模型中键能关联函数的幂律行为

Power-Law Behavior of Bond Energy Correlators in a Kitaev-type Model with a Stable Parton Fermi Surface

Hsin-Hua Lai, Olexei I. Motrunich

摘要:

本文研究了Chua等人最近提出的具有稳定费米面的kagome晶格上Kitaev型量子自旋模型的键能关联函数。[arXiv:1010.1035]。尽管自旋关联是超短程的,我们发现键能关联具有幂律行为,具有$1/|{\bm r}|^3$包络和在无公度波矢处的振荡。我们确定了相应的奇异表面在动量空间,这提供了一个规范不变的表征这种无隙自旋液体。

英文摘要:

We study bond energy correlation functions in an exactly solvable quantum spin model of Kitaev type on the kagome lattice with stable Fermi surface of partons proposed recently by Chua et al, Ref.\[arXiv:1010.1035]. Even though any spin correlations are ultra-short ranged, we find that the bond energy correlations have power law behavior with a $1/|{\bm r}|^3$ envelope and oscillations at incommensurate wavevectors. We determine the corresponding singular surfaces in momentum space, which provide a gauge-invariant characterization of this gapless spin liquid.

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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