Coulomb gaps in one-dimensional spin-polarized electron systems

Gun Sang Jeon, M. Choi, S. R.Eric Yang

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17 Scopus citations


We investigate the density of states (DOS) near the Fermi energy of one-dimensional spin-polarized electron systems in the quantum regime where the localization length is comparable to or larger than the interparticle distance. The Wigner lattice gap of such a system, in the presence of weak disorder, can occur precisely at the Fermi energy, coinciding with the Coulomb gap in position. The interplay between the two is investigated by treating the long-range Coulomb interaction and the random disorder potential in a self-consistent Hartree-Fock approximation. The DOS near the Fermi energy is found to be well described by a power law, the exponent of which decreases with increasing disorder strength.

Original languageEnglish
Pages (from-to)R8341-R8344
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number12
StatePublished - 1996


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