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Quantum Hall Effect and Rapid Oscillations in (Tmtsf)2Pf6 under Pressure

Published online by Cambridge University Press:  25 February 2011

S. T. Hannahs,
J. S. Brooks,
W. Kang,
P. M. Chaikin,
L. Y. Chiang and
R. Upasani
S. T. Hannahs
Affiliation:
Department of Physics, Boston University, Boston MA 02215
J. S. Brooks
Affiliation:
Department of Physics, Boston University, Boston MA 02215
W. Kang
Affiliation:
Department of Physics, Princeton University, Princeton NJ 08544
P. M. Chaikin
Affiliation:
Department of Physics, Princeton University, Princeton NJ 08544Exxon Research And Engineering Co. Rt. 22E, Annandale, NJ 08801
L. Y. Chiang
Affiliation:
Exxon Research And Engineering Co. Rt. 22E, Annandale, NJ 08801
R. Upasani
Affiliation:
Department of Physics, Princeton University, Princeton NJ 08544Exxon Research And Engineering Co. Rt. 22E, Annandale, NJ 08801
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Abstract

We present magnetotransport data and the phase diagram derived from them for (TMTSF)2PF6 under sufficient pressure that the zero field Spin Density Wave (SDW) is suppressed and the material is superconducting. Application of a large magnetic field perpendicular to the conducting plane then leads to the cascade of Field Induced Spin Density Wave (FISDW) transitions. The transitions are in good agreement with the Standard model for these transitions and in contrast to the more complicated behavior seen in the ClO4 salt. In addition Hall and longitudinal resistivity indicates a behavior much closer to that observed in conventional Quantum Hall devices than in the ClO4 salt or previous studies of PF6. We do observe the “rapid” Schubnikov de Haas like oscillations in magnetoresistance at high field similar to those seen in ClO4, even though in the present case there is no evidence for anion ordering as some theories would require.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989, 251
Copyright
Copyright © Materials Research Society 1990

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References

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