title: Photoemission spectroscopy and the unusually robust one-dimensional physics of lithium purple bronze.
abstract: Temperature-dependent photoemission spectroscopy in Li(0.9)Mo(6)O(17) 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.
authors.affiliation: Randall Laboratory, University of Michigan, Ann Arbor, 48109, USA. lenart.dudy@physik.uni-wuerzburg.de
authors.forename: L
authors.initials: L
authors.lastname: Dudy
authors.forename: J D
authors.initials: JD
authors.lastname: Denlinger
authors.forename: J W
authors.initials: JW
authors.lastname: Allen
authors.forename: F
authors.initials: F
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: He
authors.forename: D
authors.initials: D
authors.lastname: Hitchcock
authors.forename: A
authors.initials: A
authors.lastname: Sekiyama
authors.forename: S
authors.initials: S
authors.lastname: Suga
mesh_terms: D003198:Computer Simulation; D008094:Lithium / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D056951:Photoelectron Spectroscopy / Q000379:methods*; D012212:Rheology / Q000379:methods*; D012996:Solutions / Q000737:chemistry*; D013814:Thermal Conductivity
chemical_list: D012996:Solutions; D008094:Lithium