Resonant thermal transport in semiconductor barrier structures

Thermal Transport in Semiconductor Nanowires

Thermal Properties of Semiconductor Low-Dimensional Structures

In this paper we review our work on thermal and thermoelectric properties of semiconductor low-dimensional structures, e.g. quantum wells and quantum wires, with emphasis on the effects of spatial confinement of acoustic phonons. We particularly concentrate on calculation of the phonon relaxation rates in mass-difference, Umklapp, point defect, and dislocation scattering processes that takes in...

Charge accumulation in GaAs/AlGaAs triple barrier resonant tunneling structures

Mesopiezoresistive effects in double-barrier resonant tunneling structures

This letter reports a mesopiezoresistive effect in a double-barrier resonant tunneling DBRT structure. In a DBRT system, an external mechanical stress causes a tensile strain, and the strain, in turn, affects the resonant tunneling and thereby the resistance. Theoretical analysis was carried out on an AlAs /GaAs /AlAs DBRT structure under in-plane uniaxial tensile stresses. The results show tha...

Oscillating magnetoresistance in diluted magnetic semiconductor barrier structures

Ballistic spin polarized transport through diluted magnetic semiconductor single and double barrier structures is investigated theoretically using a two-component model. The tunneling magnetoresistance ~TMR! of the system exhibits oscillating behavior when the magnetic field is varied. An interesting beat pattern in the TMR and spin polarization is found for different nonmagnetic semiconductor/...