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Localized Polarons and Doorway Vibrons in Finite Quantum Structures by Fehske, H.; Wellein, G.; Loos, J.; Bishop, A. R. is a scholarly article available to read on EtoBox.

What is Localized Polarons and Doorway Vibrons in Finite Quantum Structures about?

We consider transport through finite quantum systems such as quantum barriers, wells, dots or junctions, coupled to local vibrational modes in the quantal regime. As a generic model we study the Holstein-Hubbard Hamiltonian with site-dependent potentials and interactions. Depending on the barrier height to electron-phonon coupling strength ratio and the phonon frequency we find distinct opposed behaviors: Vibration-mediated tunneling or intrinsic localization of (bi)polarons. These regimes are strongly manifested in the density correlations, mobility, and optical response calculated by exact numerical techniques.

Author

Fehske, H.; Wellein, G.; Loos, J.; Bishop, A. R.

Published

2007

Language

EN