Quantum well electron scattering rates through longitudinal optic-phonon dynamical screened interaction: An analytic approach
نویسنده
چکیده
منابع مشابه
The relative importance of electron-electron and electron-phonon scattering in terahertz quantum cascade lasers
This theoretical work explores the carrier dynamical issues that must be confronted if the recent successes of the mid-infrared quantum cascade laserss1] are to be translated into longer wavelength devices. Whilst the small subband separations lead to a partial suppression of longitudinal optic (LO) phonon emission, which is the dominant non-radiative loss mechanism in quantum cascade lasers, i...
متن کاملThe carrier dynamical issues for extending the operatingwavelength of quantum cascade lasersP
Electron-longitudinal optic phonon and electron-electron intersubband scattering rates are calculated for a variety of quantum well systems. It is demonstrated that the internal quantum eeciency of a Terahertz radiative intersubband transition can be greater than in the mid-infrared at 4 K, however by room temperature has fallen to around 20%. A study of the internal quantum eeciency of a Terah...
متن کاملBias-Induced Optical Absorption of Current Carrying Two-Orbital Quantum Dot with Strong Electron-Phonon Interaction (Polaron Regime)
The one photon absorption (OPA) cross section of a current carrying two-orbital quantum dot (QD) with strong electron-phonon interaction (polaron regime) is considered. Using the self-consistent non-equilibrium Hartree-Fock (HF) approximation, we determine the dependence of OPA cross section on the applied bias voltage, the strength of effective electron-electron interaction, and level spacing ...
متن کاملDC Electric Field Effects on the Electron Dynamics in Double Rectangular Quantum Dots
The effect of a dc electric field on the temporal evolution of an electron in a double rectangular quantum dot is explored in this work. In the framework of the effective mass approximation, first-order scattering rates for interaction between confined electron-“free” electron and electron-longitudinal acoustic phonon at room temperature are calculated in the high tunneling regime, and used to ...
متن کاملPhohon Drag in Disordered Films and Structures
Quantum transport in disordered systems has been studied for many years, yet many open problems remain. One focus of these investigations is the interference of inelastic electron scattering due to electron-phonon interaction and elastic electron scattering due to impurities, boundaries and defects. Electron-phonon interaction determines the electron energy loss rate and also manifests itself i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016