Negative differential resistance in nanoscale transport in the Coulomb blockade

Prakash Parida; S Lakshmi; Swapan K Pati

doi:10.1088/0953-8984/21/9/095301

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arXiv · 0904.1335

Negative differential resistance in nanoscale transport in the Coulomb blockade

Prakash Parida·S Lakshmi·Swapan K Pati

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Abstract

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.

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Prakash Parida, S Lakshmi, Swapan K Pati. 2009-04-08. Negative differential resistance in nanoscale transport in the Coulomb blockade. https://doi.org/10.1088/0953-8984%2F21%2F9%2F095301

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