Journal Article

Spin-dependent resonant tunneling in CdTe/Cd.sub.1-xMn.sub.xTe nanostructures: effect of polaronic mass

Gnanasekaran, Lalitha, Chandrasekar, L. Bruno, Priyadharshini, E., Dinesh, A., Karunakaran, M., Santhamoorthy, Madhappan, Manikandan, A.

2025

Overview

Effect of polaronic mass on the resonant tunneling of electrons in CdTe/Cd.sub.1-xMn.sub.xTe double-barrier heterostructure is investigated. The well-known transfer matrix method is employed to calculate the barrier transparency. One can obtain a high degree of spin-polarization at a high concentration of Mn in the barrier region. The barrier transparency peak becomes narrow as the concentration of Mn increases from 10 to 20%. The effect of polaronic mass shifts the transparency peak to the lower value on the energy scale. One can obtain a high degree of spin-polarization at a high concentration of Mn in the barrier region. The account of the polaronic mass shifts the resonance energy of spin-polarization to the lower value and it enhances the spin-polarization. The spin-down electrons spend more time in the heterostructure than the spin-up electrons. The dwell time changes about 1000 times as the concentration of the barrier changes.

• Publisher: Springer
• Subject: Electrons