Physics – Condensed Matter
Scientific paper
2001-04-06
Phys. Rev. B 64, 115311 (2001)
Physics
Condensed Matter
7 pages, 5 figures
Scientific paper
10.1103/PhysRevB.64.115311
We examine how the current--voltage characteristics of a doped weakly coupled superlattice depends on temperature. The drift velocity of a discrete drift model of sequential tunneling in a doped GaAs/AlAs superlattice is calculated as a function of temperature. Numerical simulations and theoretical arguments show that increasing temperature favors the appearance of current self-oscillations at the expense of static electric field domain formation. Our findings agree with available experimental evidence.
Bonilla Luis L.
Platero Gloria
Sanchez David
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