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SUMMARY:Possible field-induced superconductivity in the quasi-1D purple br
 onze Li0.9Mo6O17 - Alimamy Bangura\, University of Bristol
DTSTART:20100203T110000Z
DTEND:20100203T120000Z
UID:TALK22813@talks.cam.ac.uk
CONTACT:Michael Sutherland
DESCRIPTION:I will present results of a magnetotransport study on single c
 rystals of the quasi-one-dimensional molybdenum oxide Li0.9Mo6O17 that is 
 perhaps the most the highly anisotropic metallic compound known to exist. 
 Li0.9Mo6O17 is metallic at room temperature\, semiconducting below a tempe
 rature Tmin = 25 K\, and in clean crystals becomes superconducting below T
 c = 1.8 K. Applying a sufficiently large magnetic field in all orientation
 s in the insulating state below Tmin gives rise to a large negative magnet
 oresistance that is most pronounced when the field is aligned along the mo
 st conductive direction. In this orientation\, a magnetic field above 24T 
 is enough to completely suppress the low temperature insulating state\, th
 at leads to a recovery of the metallic state before\, at the highest field
 s (45T)\, onset to a possible superconducting state at 10K. This onset cri
 tical temperature is almost an order of magnitude higher than ever previou
 sly reported for this material in zero field.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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