title: Non-fermi-liquid behavior in quasi-one-dimensional Li0.9Mo6O17.
abstract: We present temperature dependent scanning tunneling spectroscopy data of the quasi-one-dimensional conductor Li0.9Mo6O17. The differential tunneling current in our low-temperature spectra shows a power-law behavior around the Fermi energy, which is expected for a clean Luttinger liquid. The power-law exponent is found to be 0.6. Spectra for a temperature range of 5 to 55 K can be fitted fairly well with a model for tunneling into a Luttinger liquid at the appropriate temperature. A fit with a model based on a zero bias anomaly is significantly worse compared to the Luttinger liquid model. No signature of a phase transition at T = 24 K is observed in our temperature dependent data.
authors.affiliation: Fachbereich Naturwissenschaften, Universität Kassel, 34109 Kassel, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Hager
authors.forename: R
authors.initials: R
authors.lastname: Matzdorf
authors.forename: J
authors.initials: J
authors.lastname: He
authors.forename: R
authors.initials: R
authors.lastname: Jin
authors.forename: D
authors.initials: D
authors.lastname: Mandrus
authors.forename: M A
authors.initials: MA
authors.lastname: Cazalilla
authors.forename: E W
authors.initials: EW
authors.lastname: Plummer