Polaron in quantum nanostructures

2019-11-30 11:17:27

optical quantum phonon phonons Nanostructure

责任者: Ipatova, I.P.;Maslov, A.Yu.;Proshina, O.V. 单位: A.F. Ioffe Phys. Tech. Inst., St. Petersburg, Russia 来源出处: Surface Science(Surf. Sci. (Netherlands)),2002/06/01,507-510():598-602 摘要: The interest to blue-green lasers results in fabrication of nanostructures based on wide band gap ionic materials. The strong electron-phonon interaction with longitudinal optical phonons results in extra confinement of electrons within the nanostructure. This paper deals with theory of large radius polaron in quantum dots, wires and wells. It is shown that the binding polaron energy increases with decreasing of nanostructure dimensionality. The localized electrons are shown to interact with long wavelength optical phonons with wave vector q⩽1/L, L being the characteristic size of nanostructure 关键词: electron-phonon interactions;polar semiconductors;polarons;Schrodinger equation;semiconductor quantum dots;semiconductor quantum wells;semiconductor quantum wires;wide band gap semiconductors;quantum nanostructures;wide band gap ionic materials;strong electron-phonon interaction;longitudinal optical phonons;extra confinement of electrons;large radius polaron;quantum dots;quantum wires;quantum wells;binding polaron energy;nanostructure dimensionality;localized electrons;long wavelength optical phonons;size quantization;Schrodinger equation;phonon annihilation and creation operators;phonon distribution;potential well