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Phys. Rev. Lett. 86, 1094–1097 (2001)

Edge Electron States for Quasi-One-Dimensional Organic Conductors in the Magnetic-Field-Induced Spin-Density-Wave Phases

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K. Sengupta, Hyok-Jon Kwon, and Victor M. Yakovenko
Department of Physics and Center for Superconductivity Research, University of Maryland, College Park, Maryland 20742-4111

Received 5 June 2000; published in the issue dated 5 February 2001

We develop a microscopic picture of the electron states localized at the edges perpendicular to the chains in the Bechgaard salts in the quantum Hall regime. In a magnetic-field-induced spin-density-wave state characterized by an integer N, there exist N branches of chiral gapless edge excitations. Localization length is much longer and velocity much lower for these states than for the edge states parallel to the chains. We calculate the contribution of these states to the specific heat and propose a time-of-flight experiment to probe the propagating edge modes directly.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.1094
DOI:
10.1103/PhysRevLett.86.1094
PACS:
75.30.Fv, 71.10.Pm, 73.43.-f, 74.70.Kn