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