Frohlich Polarons from 0D to 3D: Concepts and Recent Developments‡

  title={Frohlich Polarons from 0D to 3D: Concepts and Recent Developments‡},
  author={Jozef T. Devreese},
  journal={Journal of Physics: Condensed Matter},
  • J. Devreese
  • Published 30 May 2007
  • Chemistry, Physics
  • Journal of Physics: Condensed Matter
I analyse our present understanding of the Frohlich polaron with emphasis on the response properties, in particular optical absorption. 
Role of Exciton Binding Energy on LO Phonon Broadening and Polaron Formation in (BA)2PbI4 Ruddlesden–Popper Films
The effect of carrier-carrier and carrier-phonon interactions are presented in n = 1 (2D) (BA)2PbI4 Ruddlesden-Popper thin films and their effect compared to that of conventional MAPbI3. While temp...
Resonant hole polarons in GaAs and InP
=4.2 K to determine electron light-hole and heavy-hole effective masses as functions of pump-photonenergy. We observe both light-hole and electron-polaron resonances as resonant enhancements of theExpand
Optical absorption of Fröhlich polaron in monolayer transition metal dichalcogenides
We theoretically study the optical absorption of a Frohlich polaron in monolayer transition metal dichalcogenides (TMDS) on different polar substrates using the Devreese-Huybrechts-Lemmens model, inExpand
Polaron dynamic and decoherence in transition metal dichalcogenides under electric field
We study in this paper, the dynamic and decoherence of polaron in transition metal dichalcogenides (TMDs) under electric field using Lee–Low Pines (LLP) method. We derived the fundamental and firstExpand
Fröhlich polaron and bipolaron: recent developments
It is remarkable how the Frohlich polaron, one of the simplest examples of a Quantum Field Theoretical problem, as it basically consists of a single fermion interacting with a scalar Bose field ofExpand
Laser assisted bound-free transition of a polaron bound to an impurity center
Abstract The scattering of a bound Frohlich large polaron in the presence of a coulomb impurity center as well as a linearly polarized laser field is studied. The differential (DCS) as well as theExpand
Theoretical studies of lattice- and spin-polarons
Theoretical studies of lattice- and spin-polarons are presented in this thesis, where the primary tool is ab-initio electronic structure calculations. The studies are performed with employment of aExpand
Polaronic interaction in a single modulation-doped GaAs quantum well with the Feynman-Hellwarth-Iddings-Platzman approximation
Absolute far-infrared magnetotransmission experiments have been performed in magnetic fields up to 33.5 T on a series of single GaAs quantum wells doped with different electron concentrations. TheExpand
Laser cooling and trapping of polariton
Abstract An interaction between electrons with photon is an important phenomenon in physics and, particularly, condensed matter and theoretical physics. The result of this interaction yields aExpand
Absolute instability of polaron mode in semiconductor magnetoplasma
Abstract Using coupled mode theory under hydrodynamic regime, a compact dispersion relation is derived for polaron mode in semiconductor magnetoplasma. The propagation and amplificationExpand


Theoretical evidence for the possible observation of relaxed excited states of Fröhlich polarons for polar crystals with α > 3.
Abstract The optical absorption spectrum of Frohlich polarons has been calculated for the first time for arbitrary electron-phonon interaction It is shown that relaxed excited polaron states (R.E.S.)Expand
Free energy of the Fröhlich polaron in two and three dimensions.
A novel path integral Monte Carlo scheme to solve the Fröhlich polaron model, where the polaron self-trapping is properly taken into account at the level of an effective action obtained by a preaveraging procedure with a retarded trial action. Expand
Validity of the Franck-Condon principle in the optical spectroscopy: optical conductivity of the Fröhlich polaron.
It is shown that a strong coupling expansion, based on the Franck-Condon principle, well describes the optical conductivity for large coupling strengths and a memory function formalism with phonon broadened levels reproduces the optical response for weak coupling strengths. Expand
Comment on "Fröhlich mass in GaAs-based structures".
The Froehlich polaron concept is valid and even necessary to interpret the CR spectra of quantum wells, and the theoretical peak positions of theCR spectra calculated within the many-polaron approach compare well with experimental data. Expand
Optical conductivity of the Fröhlich polaron.
It is shown that the picture of sharp resonances due to relaxed excited states in the strong-coupling regime is "washed out" by large broadening of these states and the spectrum contains only a single-maximum broad peak with peculiar shape and a shoulder. Expand
Large and small polaron excitations inLa2/3(Sr/Ca)1/3MnO3films
We present detailed optical measurements of the mid-infrared (MIR) excitations in thin films of La 2 / 3 Sr 1 / 3 MnO 3 (LSMO) and La 2 / 3 Ca 1 / 2 MnO 3 (LCMO) across the magnetic transition. TheExpand
Solid-State Physics
These are a set of notes I have made, based on lectures given by M.Moore at the University of Manchester Jan-June ’08. Please e-mail me with any comments/corrections:
Optical evidence of polaron interaction in InAs/GaAs quantum dots
Photoluminescence (PL) and resonant PL (RPL) have been performed at low temperatures in a number of InAs/GaAs quantum dots (QD's) whose emission energies range from 1.4 to 1.08 eV. A simple, standardExpand
Photoluminescence of spherical quantum dots
In order to interpret the phonon-assisted optical transitions in semiconductor quantum dots, a theory is developed comprising the exciton interaction with both adiabatic and Jahn-Teller phonons andExpand
Evolution of a polaron band through the phase diagram of Nd[2-x]Ce[x]CuO[4-y]
The evolution with doping and temperature of the polaronic absorption in a family of high-T$_c$ superconductors is first followed here across the whole phase diagram. The polaron band softens withExpand