Large polaron formation induced by Rashba spin-orbit coupling

Here the electron-phonon Holstein model with Rashba spin-orbit interaction is studied for a two-dimensional square lattice in the adiabatic limit. It is demonstrated that a delocalized electron at zero spin-orbit coupling localizes into a large polaron state as soon as the Rashba term is nonzero. This spin-orbit induced polaron state has localization length inversely proportional to the Rashba coupling gamma and it dominates a wide region of the gamma-lambda phase diagram, where lambda is the electron-phonon interaction.


Published in:
Physical Review B, 81, -
Year:
2010
Keywords:
Laboratories:




 Record created 2011-12-16, last modified 2018-09-13


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