Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-04-08
J. Phys. : Cond. Matter. 21, 095301 (2009)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1088/0953-8984/21/9/095301
Motivated by recent experiments, we have studied transport behavior of coupled quantum dot systems in the Coulomb blockade regime using the master (rate) equation approach. We explore how electron-electron interactions in a donor-acceptor system, resembling weakly coupled quantum dots with varying charging energy, can modify the systems response to an external bias, taking it from normal Coulomb blockade behavior to negative differential resistance (NDR) in the curent-voltage characteristics.
Lakshmi Sankaran
Parida Prakash
Pati Swapan K.
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