Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-07-06
Phys. Rev. Lett. 107, 246404 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
10.1103/PhysRevLett.107.246404
Nonequilibrium interplay between charge, spin and lattice degrees of freedom on a square lattice is studied for a single charge carrier doped in the t-J-Holstein model. In the presence of an uniform electric field we calculate the qusistationary state. With increasing electron-phonon (e-ph) coupling the carrier mobility decreases, however, we find increased steady state current due to e-ph coupling in the regime of negative differential resistance. We explore the distribution of absorbed energy between the spin and the phonon subsystem. For model parameters as relevant for cuprates, the majority of the gained energy flows into the spin subsystem.
Bonča Janez
Maekawa Sadamichi
Tohyama Takami
Vidmar Lev
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