Directional Field-Induced Metallization of Quasi-One-Dimensional Li0.9Mo6O17

Xiaofeng Xu, A. F. Bangura, J. G. Analytis, J. D. Fletcher, M. M. J. French, N. Shannon, J. He, S. Zhang, D. Mandrus, R. Jin, and N. E. Hussey
Phys. Rev. Lett. 102, 206602 – Published 20 May 2009

Abstract

We report a detailed magnetotransport study of the highly anisotropic quasi-one-dimensional oxide Li0.9Mo6O17 whose in-chain electrical resistivity diverges below a temperature Tmin25K. For T<Tmin, a magnetic field applied parallel to the conducting chain induces a large negative magnetoresistance and, ultimately, the recovery of a metallic state. We show evidence that this insulator-metal crossover is a consequence of field-induced suppression of a density-wave gap in a highly one-dimensional conductor. At the highest fields studied, there is evidence for the possible emergence of a novel superconducting state with an onset temperature Tc>10K.

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  • Received 11 December 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.206602

©2009 American Physical Society

Authors & Affiliations

Xiaofeng Xu1, A. F. Bangura1, J. G. Analytis1,*, J. D. Fletcher1, M. M. J. French1, N. Shannon1, J. He2, S. Zhang2, D. Mandrus3, R. Jin3,4, and N. E. Hussey1

  • 1H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, United Kingdom
  • 2Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA
  • 3Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 4Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA

  • *Present address: Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, CA 94305-4045, USA.

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Vol. 102, Iss. 20 — 22 May 2009

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