Quantized Hall effect and a new field-induced phase transition in the organic superconductor (TMTSF)2PF6

J. R. Cooper, W. Kang, P. Auban, G. Montambaux, D. Jérome, K. Bechgaard

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Abstract

We report a Hall effect and magnetoresistance study of sin- gle crystals of the organic superconductor tetramethyl-tetraselenafulvalinium hexafluorophosphate, (TMTSF)2PF6, under hydrostatic pressure at temperatures down to 0.5 K in magnetic fields up to 25 T. There is clear evidence for a quantized Hall effect, with plateaus labeled by the integers n=5 to 1, up to 17 T. A new field-induced phase transition to a very resistive state occurs at 18 T. We believe that this is the n=0 spin-density-wave state predicted by the quantized nesting theory.

Original languageEnglish
Pages (from-to)1984-1987
Number of pages4
JournalPhysical Review Letters
Volume63
Issue number18
DOIs
StatePublished - 1989

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