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Phys Rev Lett. 2006 May 19;96(19):196403. Epub 2006 May 16.

New Luttinger-liquid physics from photoemission on Li0.9M06O17.

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Randall Laboratory of Physics, University of Michigan, Ann Arbor, 48109, USA.


Temperature dependent high resolution photoemission spectra of quasi-one-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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