Photoemission spectra of many-polaron systems

  title={Photoemission spectra of many-polaron systems},
  author={Martin Hohenadler and Danilo Rene Neuber and Wolfgang von der Linden and Gerhard Wellein and Jan Loos and Holger Fehske},
  journal={Physical Review B},
The cross over from low to high carrier densities in a many-polaron system is studied in the framework of the one-dimensional spinless Holstein model, using unbiased numerical methods. Combining a novel quantum Monte Carlo approach and exact diagonalization, accurate results for the single-particle spectrum and the electronic kinetic energy on fairly large systems are obtained. A detailed investigation of the quality of the Monte Carlo data is presented. In the physically most important… 
Carrier-density effects in many-polaron systems
Many-polaron systems with finite charge-carrier density are often encountered experimentally. However, until recently, no satisfactory theoretical description of these systems has been available even
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Greens function of the Holstein polaron
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Formation and temperature evolution of correlated polarons in colossal magnetoresistive manganites.
  • L. Hao, L. Sheng
  • Physics
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2009
The peak structure in the quasiadiabatic regime provides an explanation for the temperature dependence of the polaron correlation in nanoscale charge ordered polaron clusters observed in the manganites with intermediate to narrow bandwidths.
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We present numerical exact results for the polaronic band structure of the Holstein molecular crystal model in one and two dimensions. The use of direct Lanczos diagonalization technique, preserving
The effects of quantum lattice fluctuations on the Peierls transition are studied within the one--dimensional Holstein molecular crystal model by means of exact diagonalization methods. Applying a
A dynamical mean-field theory of the small polaron problem is presented, which becomes exact in the limit of infinite dimensions. The ground-state properties and the one-electron spectral function
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Mobile small polaron
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  • Stéphan
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  • 1996
The polaron band structure at intermediate coupling is shown to deviate markedly from that of a nearest-neighbor tight-binding model and is in fact similar in shape to the prediction of weak-coupling self-consistent perturbation theory.