arXiv 1201.41002012-01cond-mat.mes-hall

Engineering interband tunneling in nanowires with diamond cubic or zincblende crystalline structure based on atomistic modeling

Pino D'Amico, Paolo Marconcini, Gianluca Fiori, Giuseppe Iannaccone

备注：: 4 pages, 3 figures. Final version, published in IEEE Trans. Nanotechnol. It differs from the previous arXiv version for the title and for some changes in the text and in the references
发表信息：: IEEE Trans. Nanotechnol. 12, 839 (2013)
DOI：: 10.1109/TNANO.2013.2275167

英文摘要：

We present an investigation in the device parameter space of band-to-band tunneling in nanowires with a diamond cubic or zincblende crystalline structure. Results are obtained from quantum transport simulations based on Non-Equilibrium Green's functions with a tight-binding atomistic Hamiltonian. Interband tunneling is extremely sensitive to the longitudinal electric field, to the nanowire cross section, through the gap, and to the material. We have derived an approximate analytical expression for the transmission probability based on WKB theory and on a proper choice of the effective interband tunneling mass, which shows good agreement with results from atomistic quantum simulation.

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