Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 25, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/25/1/014007
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Funding
- US National Science Foundation (NSF) [DMR-03-02825, DMR-07-04480]
- SC EPSCOR/Clemson University Cost Share
- US Department of Energy (DOE) Implementation Program
- MEXT and JSPS, Japan [G18, G10, 20102003, 18104007, 18684015, 21740229, 21340101]
- Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02- 05CH11231]
- Grants-in-Aid for Scientific Research [21340101, 18684015, 21740229, 23654121] Funding Source: KAKEN
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Temperature-dependent photoemission spectroscopy in Li0.9Mo6O17 contributes to evidence for one-dimensional (1D) 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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