Title :
Contact Block Reduction method for ballistic quantum transport with semi-empirical sp3d5s* tight binding band models
Author :
Ryu, Hoon ; Klimeck, Gerhard
Author_Institution :
Birck Nanotechnol. Center, Purdue Univ., Lafayette, IN, USA
Abstract :
The utility of the Contact Block Reduction method (CBR) to find the retarded Green¿s function for ballistic quantum devices with semi-empirical tight binding band (TB) models is discussed. This work shows that the original method needs several modifications to be used with TB models. In the common case where two contacts are used for transport in quantum wires, our approach computes the transmission coefficients with much less computing load than the state-of-the-art Recursive Green¿s Function (RGF) algorithm.
Keywords :
Green´s function methods; quantum well devices; quantum wires; semiconductor device models; ballistic quantum devices; ballistic quantum transport; contact block reduction method; quantum wires; recursive Green¿s function algorithm; semi-empirical tight binding band models; transmission coefficients; Computer networks; Crystals; Green´s function methods; Intelligent networks; Matrix decomposition; Nanoscale devices; Nanotechnology; Open systems; Quantum computing; Wires;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734543
