Temperature-dependent electrical resistance in quasi-one-dimensional ${\text{Li}}_{0.9}{\text{Mo}}_6{\text{O}}_{17}$ is described by two Luttinger liquid anomalous exponents $\alpha$, each associated with a distinct one dimensional band. The band with $\alpha <1$ is argued to crossover to a higher dimension below the temperature $T_{M^{\prime }}$, leading to superconductivity. Disorder and magnetic fields are shown to induce the Bose metal behavior in this bulk compound.

• Received 3 April 2008

DOI:https://doi.org/10.1103/PhysRevB.77.193106