Abstract
We have investigated Γ -symmetry resonant tunneling in a GaAsAlAs "double barrier structure" with 20 Å thick AlAs barriers as a function of hydrostatic pressure. A quantitative analysis based on transfer matrix and self-consistent Schrödinger-Poisson calculations is performed to understand the effects of charge accumulation in each layer on the resonance bias and the resonance peak/valley currents, yielding the value of the longitudinal mass (mz*) at the band edge of 20 Å thick AlAs, mz* = (0.35±0.05) m0.
Original language | English |
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Article number | 072106 |
Journal | Applied Physics Letters |
Volume | 87 |
Issue number | 7 |
DOIs | |
State | Published - 15 Aug 2005 |