TY - JOUR
T1 - CDW Ground States and Electron-Hole Symmetry of a Two-Dimensional Electron System in Strong Magnetic Fields
AU - Kuramoto, Yoshio
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1982
Y1 - 1982
N2 - The ground state of a two-dimensional electron system in a strong magnetic field is studied in the Hartree-Fock approximation for the case of a half-filled ground Landau level. Due consideration is given to consequences of the elec-tron-hole symmetry, which is found to lead to a nonmetallic CDW ground state. The Hartree-Fock integral equations are solved numerically with full account of higher harmonics. The result shows that the ground state is not a triangular CDW, in spite of the most favorable Madelung energy, but a square CDW with the electron-hole symmetry spontaneously broken. Detailed results for band structures, density patterns and cohesive energies are presented.
AB - The ground state of a two-dimensional electron system in a strong magnetic field is studied in the Hartree-Fock approximation for the case of a half-filled ground Landau level. Due consideration is given to consequences of the elec-tron-hole symmetry, which is found to lead to a nonmetallic CDW ground state. The Hartree-Fock integral equations are solved numerically with full account of higher harmonics. The result shows that the ground state is not a triangular CDW, in spite of the most favorable Madelung energy, but a square CDW with the electron-hole symmetry spontaneously broken. Detailed results for band structures, density patterns and cohesive energies are presented.
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U2 - 10.1143/JPSJ.51.3810
DO - 10.1143/JPSJ.51.3810
M3 - Article
AN - SCOPUS:33744693638
VL - 51
SP - 3810
EP - 3819
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 12
ER -