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Competing phases in the high field phase diagram of (TMTSF)(2)ClO(4).

Identifieur interne : 000125 ( PubMed/Checkpoint ); précédent : 000124; suivant : 000126

Competing phases in the high field phase diagram of (TMTSF)(2)ClO(4).

Auteurs : S. Haddad [Tunisie] ; S. Charfi-Kaddour ; C. Nickel ; M. Héritier ; R. Bennaceur

Source :

RBID : pubmed:12190492

Abstract

A model is presented for the high field phase diagram of (TMTSF)(2)ClO(4), taking into account the anion ordering, which splits the Fermi surface into two bands. For strong enough field, the largest metal spin density wave critical temperature corresponds to the N=0 phase, which originates from two intraband nesting processes. At lower temperature, the competition between these processes puts at disadvantage the N=0 phase vs the N=1 phase, which is due to interband nesting. A first order transition then takes place from the N=0 to N=1 phase. We ascribe to this effect the experimentally observed phase diagrams.

DOI: 10.1103/PhysRevLett.89.087001
PubMed: 12190492


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pubmed:12190492

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