Γ‐Xintervalley transfer in single AlAs barriers under hydrostatic pressure

Autor:	M. Buchanan, J. Beerens, Luiz A. Cury, Y. Carbonneau, H. C. Liu
Rok vydání:	1993
Předmět:	Electron transfer Tunnel effect Physics and Astronomy (miscellaneous) Condensed matter physics Chemistry Hydrostatic pressure Biasing Heterojunction Substrate (electronics) Electronic band structure Quantum tunnelling
Zdroj:	Applied Physics Letters. 62:1955-1957
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.109502
Popis:	We have investigated the contribution of Γ‐X intervalley transfer to the tunneling current in single AlAs barrier heterostructures grown on a GaAs substrate by measuring I‐V characteristics at low temperature and under hydrostatic pressure up to 9 kbar. The application of hydrostatic pressure affects the contribution of the Γ‐X transfer process to the total tunneling current at a given bias voltage. Experimental results are compared with current‐voltage characteristics calculated with a model taking into account the Γ‐X transfer at heterointerfaces. Only transfer processes involving the longitudinal X valley in AlAs are considered in the calculations. Very good agreement is found for low bias conditions at all pressures.
Databáze:	OpenAIRE
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