2008/05/16 by J. P. Hague, P. E. Kornilovitch, A. S. Alexandrov · 1 citation
Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.78.092302
published as Phys. Rev. B 78, 092302 (2008) · 4 pages, 4 figures
arxiv created 2008/05/16 · openalex publication_date 2008/09/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
We consider the effects of impurities on polarons in three dimensions using a continuous time quantum Monte Carlo algorithm. An exact treatment of the phonon degrees of freedom leads to a very efficient algorithm, and we are able to compute the polaron dynamics on an infinite lattice by developing an auxiliary weighting scheme. The magnitude of the impurity potential, the electron-phonon coupling, and the phonon frequency are varied. We determine the magnitude of the impurity potential required for polaron trapping. For small electron-phonon coupling the number of phonons increases dramatically on trapping combined with a sharp decrease in kinetic energy. The polaron binding diagram is computed, showing that intermediate-coupling low-phonon-frequency polarons are localized by exceptionally small impurities.