Observation of the Coulomb Blockade at 77 K in a Lattice-Mismatched GaAs/Si Heterojunction
T. Figielski, T. Wosiński, A. Mąkosa
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

and F. Riesz
Research Institute for Technical Physics, Hungarian Academy of Sciences, P.O. Box 76, 1325 Budapest, Hungary
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We investigated current-voltage characteristics of a lattice-mismatched GaAs(n)/Si(p) heterojunction. For low bias voltages at 77 K it exhibits a behaviour characteristic of the Coulomb blockade. We discuss why this unexpected phenomenon can occur in the investigated structures.
DOI: 10.12693/APhysPolA.92.745
PACS numbers: 73.40.Gk, 73.40.Kp, 61.72.Lk