Gain of the kinetic energy of bipolarons in the t-J-Holstein model based on electron-phonon coupling
arXiv:1008.3254 · doi:10.1103/PhysRevB.82.125121
Abstract
With increasing electron-phonon coupling as described within the t-J-Holstein model, bipolaron kinetic energy is lowered in comparison with that of the polaron. This effect is accompanied with "undressing" of bipolaron from lattice degrees of freedom. Consequently, the effective bipolaron mass becomes smaller than the polaron mass. Magnetic as well as lattice degrees of freedom cooperatively contribute to formation of spin-lattice bipolarons.
arXiv comment6 pages, 4 figures
References in corpus (18)
- Correlated Electrons in High Temperature Superconductors
- Mobile small polaron
- Polaron in t-J model
- Metal-insulator quantum critical point beneath the high Tc superconducting dome
- Bipolarons in the Extended Holstein Hubbard Model
- Interplay between electron-phonon and Coulomb interactions in cuprates
- Superlight small bipolarons in the presence of strong Coulomb repulsion
- Crossover of superconducting properties and kinetic-energy gain in two-dimensional Hubbard model
- Kinetic energy change with doping upon superfluid condensation in high temperature superconductors
- Doping Dependence of the Redistribution of Optical Spectral Weight in BiSrCaCuO
- Numerical approach to low-doping regime of the t-J model
- A comprehensive numerical and analytical study of two holes doped into the 2D t-J model
- Optical Conductivity of the t-J model within Cluster Dynamical Mean Field Theory
- Bipolaron in the t-J model coupled to longitudinal and transverse quantum lattice vibrations
- In-plane optical spectral weight transfer in optimally doped BiSrCaCuO
- Revisiting two holes in a locally antiferromagnetic background: the role of retardation and Coulomb repulsion effects
- Kinetic energy driven superconductivity and pseugogap phase in weakly doped antiferromagnets
- Optical Integral and Sum Rule Violation