Received 2 March 2009; published 21 September 2009

We report an angle resolved photoemission spectroscopy study of quantum critical scaling in the single-particle spectral function of a novel anisotropic metal Li0.9Mo6O17. We find a temperature (T) scaling exponent value and also low-T angle resolved photoemission spectroscopy line shapes that are very challenging for current one-dimensional theory frameworks. These results add a new spectroscopic component to a growing collection of puzzling low-T transport behaviors of this material.

See accompanying Viewpoint commentary, Physics 2, 78 (2009) - physics.aps.org/articles/v2/78

©2009 The American Physical Society