Program

P.62 -- Poster, NCTP-41

Date: Wednesday, 3 August 2016

Time: 08h30 - 10h00

Influence of an External Magnetic Field on the Acoustomagnetoelectric Field in a Cylindrical Quantum Wire with a Parabolic Potential

Nguyen Van Nghia (1), Nguyen Quang Bau (2)

(1) Department of Physics, Faculty of Energy, Water Resources University, 175 Tay Son, Dong Da, Hanoi, Vietnam; (2) Faculty of Physics, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam

The acoustomagnetoelectric (AME) field in a cylindrical quantum wire with a parabolic potential (CQWPP) is theoretically investigated in the presence of an external magnetic field (EMF) by using the quantum kinetic equation for the distribution function of electrons scattering with internal acoustic phonon and electrons system interacting with external phonons in a CQWPP. The analytic expression for the AME field in the CQWPP in the presence of the EMF is obtained. The dependence of AME field on the frequency of external acoustic wave, the cyclotron frequency of the EMF and the intensity of the EMF is achieved. Theoretical results for the AME field are numerically evaluated, plotted and discussed for a specific CQWPP GaAs/GaAsAl. This result has shown that the dependence of the AME field on intensity of the EMF is many distinct maxima in the quantized magnetic region. These results also compared received fields with those for normal bulk semiconductors, quantum well and quantum wire to show the difference. The influence of an EMF on AME field in a CQWPP is newly developed.

Presenter: Nguyen Van Nghia