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arXiv 1206.0798cond-mat.str-elcond-mat.supr-con
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锂紫青铜的光电子能谱和异常稳健的一维物理

Photoemission Spectroscopy and the Unusually Robust One Dimensional Physics of Lithium Purple Bronze

L. Dudy, J. D. Denlinger, J. W. Allen, F. Wang, J. He, D. Hitchcock, A. Sekiyama, S. Suga

摘要:

Li0.9Mo6O17中的温度依赖性光电子能谱有助于一维物理的证据,这是非常强大的。三个通用特性的Luttinger液体观察,幂律行为的k-积分谱函数下降到温度刚刚高于超导过渡,k-分辨线型,显示holon和自旋功能,和量子临界(QC)缩放的线型。在Tomonaga Luttinger模型中的线形和缩放的预期的apturtures可以部分地描述的一个现象的动量加宽,提出和讨论。的可能性,某种形式的一维物理获得甚至到超导转变温度进行了评估。

英文摘要:

Temperature dependent photoemission spectroscopy in Li0.9Mo6O17 contributes to evidence for one dimensional physics that is unusually robust. Three generic characteristics of the Luttinger liquid are observed, power law behavior of the k-integrated spectral function down to temperatures just above the superconducting transition, k-resolved lineshapes that show holon and spinon features, and quantum critical (QC) scaling in the lineshapes. Departures of the lineshapes and the scaling from expectations in the Tomonaga Luttinger model can be partially described by a phenomenological momentum broadening that is presented and discussed. The possibility that some form of 1d physics obtains even down to the superconducting transition temperature is assessed.

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