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New Luttinger liquid physics from photoemission on Li$_{0.9}$Mo$_6$O$_{17}$

Feng Wang·J. V. Alvarez·S. -K. Mo·J. W. Allen·G. -H. Gweon·J. He·R. Jin·D. Mandrus·H. Höchst
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Abstract

Temperature dependent high resolution photoemission spectra of quasi-1 dimensional Li$_{0.9}$Mo$_6$O$_{17}$ evince a strong renormalization of its Luttinger liquid density-of-states anomalous exponent. We trace this new effect to interacting charge neutral critical modes that emerge naturally from the two-band nature of the material. Li$_{0.9}$Mo$_6$O$_{17}$ is shown thereby to be a paradigm material that is capable of revealing new Luttinger physics.

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Feng Wang, J. V. Alvarez, S. -K. Mo, J. W. Allen, G. -H. Gweon, J. He, R. Jin, D. Mandrus, H. Höchst. 2006-04-21. New Luttinger liquid physics from photoemission on Li$_{0.9}$Mo$_6$O$_{17}$. https://doi.org/10.1103/physrevlett.96.196403

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