Spin-dependent resonant tunneling in CdTe/Cd1−xMnxTe nanostructures: effect of polaronic mass

IF 1.6 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

The European Physical Journal B Pub Date : 2025-03-06 DOI:10.1140/epjb/s10051-025-00888-4

L. Bruno Chandrasekar, A. Dinesh, Lalitha Gnanasekaran, Madhappan Santhamoorthy, M. Karunakaran, A. Manikandan, E. Priyadharshini, P. Shunmuga Sundaram, S. Kaleel Mohamed Ibrahim

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Abstract

Effect of polaronic mass on the resonant tunneling of electrons in CdTe/Cd_1−xMn_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.