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High Magnetic Field Phases of the (TMTSF)2X (X = CLO4, PF6) Charge Transfer Complexes

Published online by Cambridge University Press:  25 February 2011

J. S. Brooks ,
N. A. Fortune ,
P. M. Chaikin ,
L. Y. Chiang ,
G. Montambaux  and
Jos. A. A. J. Perenboom
J. S. Brooks
Affiliation:
Department of Physics, Boston University, Boston MA 02215
N. A. Fortune
Affiliation:
Department of Physics, Boston University, Boston MA 02215
P. M. Chaikin
Affiliation:
Department of Physics, Princeton University, Princeton NJ 08544 Exxon Research And Engineering Co. Rt. 22E, Annandale, NJ 08801
L. Y. Chiang
Affiliation:
Exxon Research And Engineering Co. Rt. 22E, Annandale, NJ 08801
G. Montambaux
Affiliation:
Laboratoire de Physique des Solides, (associe au CRNS), Universite Paris-Sud, 91495 Orsay, France
Jos. A. A. J. Perenboom
Affiliation:
High-Field Magnet Laboratory, University of Nijmegen, Toernooiveld, NL-6525 ED Nijmegen, The Netherlands.
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Abstract

The purpose of this talk is to discuss the physical properties of the (TMTSF)2X charge transfer salts in high magnetic fields. This class of materials is of great interest since the effective lower dimensionality and the various ground states are magnetic field dependent at low temperatures. At present, the so-called “standard model” provides a good theoretical description of the low field field induced spin density wave transitions (FISDW). However the reentrance from the last FISDW back to a high field metallic state, and the coexistence of “fast oscillations” in all measured properties, is yet to be accurately described theoretically. The emphasis of this paper is on recent specific heat results which have been obtained on (TMTSF)2ClO4 in magnetic fields as high as 30 T. Here we observe both the reentrant phase transition and the fast oscillations in the specific heat. A main conclusion we draw from our measurements is that the density of states in the reentrant phase is less than it is in the low field metallic state at low temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 217
Copyright
Copyright © Materials Research Society 1990

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References

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