ISSN:
1572-9605
Keywords:
Extended Hubbard Hamiltonian
;
Holstein dimer
;
polarons
;
superconductivity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract A polaronic Hamiltonian is obtained for a dimer of length a, including an Einstein phonon of frequency Ω, a Holstein coupling g 0, and all the electronic one- and two-body terms consistent with a single orbital per site (the latter evaluated in terms of Wannier functions built from Gaussian atomic orbitals). In the quarter- and half-filled orbital cases, the possible ground states for varying a, at given g 0 and Ω, are identified by independent and simultaneous optimization of the electronic and phononic parameters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007795603431
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