Additional Coulomb blockade and negative differential conductance in closed two-dimensional tunnel junction arrays

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We have theoretically investigated the transport properties of a two-dimensional array of small tunnel junctions having two different paths between the source and the drain electrodes. We have found that at zero temperature the Coulomb interaction between tunneling electrons in the upper and the lower branches of the array can bring about stationary configurations of electrons which completely block further influx of electrons from the source at voltages above the usual Coulomb blockade. This "additional" Coulomb gap is transformed into a negative differential conductance regime at finite temperature. We also discuss the effect of imperfection of arrays on the additional Coulomb blockade phenomena. (C) 1998 American Institute of Physics. [S0021-8979(98)06417-2].
Publisher
AMER INST PHYSICS
Issue Date
1998-09
Language
English
Article Type
Article
Citation

JOURNAL OF APPLIED PHYSICS, v.84, no.5, pp.2974 - 2976

ISSN
0021-8979
DOI
10.1063/1.368434
URI
http://hdl.handle.net/10203/68698
Appears in Collection
EE-Journal Papers(저널논문)
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