The Anharmonic Electron-Phonon Problem

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.4588· OSTI ID:399864

Freericks, J; Jarrell, M; Mahan, G ^[1]

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1. Department of Physics, Georgetown University, Washington, D.C. 20057-0995 (United States)

The anharmonic electron-phonon problem is solved in the infinite-dimensional limit using quantum Monte Carlo simulation. Charge-density-wave order is seen to remain at half filling even though the anharmonicity removes the particle-hole symmetry of the model. Superconductivity is strongly favored away from half filling but the anharmonicity does not enhance transition temperatures over the maximal values found in the harmonic limit. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 399864
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANHARMONIC CRYSTALS
CHARGE DENSITY
CHARGE DENSITY WAVES
ELECTRON-PHONON COUPLING
LATTICE VIBRATIONS
MONTE CARLO METHOD
ORNL
POLARONS
SIMULATION
SUPERCONDUCTIVITY