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cond-mat.str-el2023★ 5 cited
Enhancement of Charge Density Wave Correlations in a Holstein Model with an Anharmonic Phonon Potential
C. Kvande, C. Feng, F. Hébert +2
The Holstein Hamiltonian describes itinerant electrons whose site density couples to local phonon degrees of freedom. In the single site limit, at half-filling, the electron-phonon…
cond-mat.str-el2021
Quantum Monte Carlo study of an anharmonic Holstein model
G. Paleari, F. Hébert, B. Cohen-Stead +3
We study the effects of anharmonicity on the physics of the Holstein model, which describes the coupling of itinerant fermions and localized quantum phonons, by introducing a quart…
cond-mat.str-el2019
Competition between Phase Separation and Spin Density Wave or Charge Density Wave Order: Role of Long-Range Interactions
Bo Xiao, F. Hébert, G. Batrouni +1
Recent studies of pairing and charge order in materials such as FeSe, SrTiO, and 2H-NbSe have suggested that momentum dependence of the electron-phonon coupling plays an im…