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Phys. Rev. Lett. 82, 1522–1525 (1999)

Theory of Coexisting Charge- and Spin-Density Waves in (TMTTF)2Br,(TMTSF)2PF6, and α-(BEDT-TTF)2MHg(SCN)4

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S. Mazumdar and S. Ramasesha*
Department of Physics, University of Arizona, Tucson, Arizona 85721

R. Torsten Clay and David K. Campbell
Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

Received 10 March 1998; published in the issue dated 15 February 1999

Recent experiments indicate that the spin-density waves (SDWs) in (TMTTF)2Br,(TMTSF)2PF6, and α-(BEDT-TTF)2MHg(SCN)4 are highly unconventional and coexist with charge-density waves (CDWs). We present a microscopic theory of this unusual CDW-SDW coexistence. A complete understanding requires the explicit inclusion of strong Coulomb interactions, lattice discreteness, the anisotropic two-dimensional nature of the lattice, and the correct band filling within the starting Hamiltonian.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.1522
DOI:
10.1103/PhysRevLett.82.1522
PACS:
71.30.+h, 71.45.Lr, 74.70.Kn, 75.30.Fv

*Permanent address: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.

 
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