کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
546542 1450485 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polaron effects on the energy of a hydrogenic donor impurity in GaAs–(Ga,Al)As quantum-well wires
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر سخت افزارها و معماری
پیش نمایش صفحه اول مقاله
Polaron effects on the energy of a hydrogenic donor impurity in GaAs–(Ga,Al)As quantum-well wires
چکیده انگلیسی

In this work using the effective-mass approximation within a variational approach we study the effect of the 3D longitudinal optical phonons on the energy of a shallow donor impurity in a GaAs–(Ga,Al)As quantum-well wire with a magnetic field applied in the wire-axis direction. We obtain the energy of the lower impurity states as a function of the wire radius, the donor position inside the wire, and under the effect of the applied magnetic field. The polaron effects on the impurity energy are studied using second order perturbation theory. We include non-parabolicity effects to explain the optical experiments under applied high magnetic fields.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microelectronics Journal - Volume 39, Issues 3–4, March–April 2008, Pages 466–471
نویسندگان
, , ,