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Magnetic and lattice polaron in Holstein-t-J model by Cappelluti, E.; Ciuchi, S. is a scholarly article available to read on EtoBox.

What is Magnetic and lattice polaron in Holstein-t-J model about?

We investigate the interplay between the formation of lattice and magnetic polaron in the case of a single hole in the antiferromagnetic background. We present an exact analytical solution of the Holstein-t-J model in infinite dimensions. Ground state energy, electron-lattice correlation function, spin bag dimension as well as spectral properties are calculated. The magnetic and hole-lattice correlations sustain each other, i.e. the presence of antiferromagnetic correlations favors the formation of the lattice polaron at lower value of the electron-phonon coupling while the polaronic effect contributes to reduce the number of spin defects in the antiferromagnetic background. The crossover towards a spin-lattice small polaron region of the phase diagram becomes a discontinuous transition in the adiabatic limit.

Author

Cappelluti, E.; Ciuchi, S.

Published

2002

Language

EN