Journal
SOLID-STATE ELECTRONICS
Volume 49, Issue 9, Pages 1510-1515Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sse.2005.07.013
Keywords
device simulation; quantum transport; Wigner equation; double-gate MOSFET
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Source-to-drain current including tunneling in deca-nanometer double-gate MOSFETs is studied using a Monte Carlo approach for the Wigner transport equation. This approach allows the effect of scattering to be included. The subband structure is calculated by means of post-processing results from the device simulator (MINIMOS)-NT, and the contribution of the lowest subband is determined by the quantum transport simulation. Intersubband coupling elements are explicitly calculated and proven to be small in double-gate MOSFETs. The simulation results clearly show an increasing tunneling component of the drain current with decreasing gate length. For long gate length the semi-classical result is recovered. (c) 2005 Elsevier Ltd. All rights reserved.
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