Quantitative analysis on the effects of AlAs X states on Γ resonance in a GaAsAlAs double barrier structure under elevated hydrostatic pressures

Yongmin Kim, Kyooho Jung, Hyunsik Im, P. C. Klipstein, R. Grey, G. Hill

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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 languageEnglish
Article number072106
JournalApplied Physics Letters
Volume87
Issue number7
DOIs
StatePublished - 15 Aug 2005

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