TY - GEN
T1 - Mode space approach for tight-binding transport simulation in graphene nanoribbon FETs
AU - Grassi, Roberto
AU - Gnudi, Antonio
AU - Gnani, Elena
AU - Reggiani, Susanna
AU - Baccarani, Giorgio
PY - 2009/10/27
Y1 - 2009/10/27
N2 - A mode space tight-binding approach for the simulation of armchair graphene nanoribbon FETs is discussed. It makes use of slab-dependent modes and a novel criterion for mode selection going beyond the one based on the lowest energy subbands. For ideal ribbons we show that, by splitting the modes into decoupled groups, the new method provides results almost identical to the real space with a speedup of more than one order of magnitude. Even in the presence of edge roughness, which tends to couple the modes, the mode space approach still offers a sizable computational advantage with respect to the real space, while retaining a good accuracy.
AB - A mode space tight-binding approach for the simulation of armchair graphene nanoribbon FETs is discussed. It makes use of slab-dependent modes and a novel criterion for mode selection going beyond the one based on the lowest energy subbands. For ideal ribbons we show that, by splitting the modes into decoupled groups, the new method provides results almost identical to the real space with a speedup of more than one order of magnitude. Even in the presence of edge roughness, which tends to couple the modes, the mode space approach still offers a sizable computational advantage with respect to the real space, while retaining a good accuracy.
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U2 - 10.1109/IWCE.2009.5091120
DO - 10.1109/IWCE.2009.5091120
M3 - Conference contribution
AN - SCOPUS:70350225598
SN - 9781424439270
T3 - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
BT - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
T2 - 2009 13th International Workshop on Computational Electronics, IWCE 2009
Y2 - 27 May 2009 through 29 May 2009
ER -