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Title: Quantum tunneling between bent semiconductor nanowires

We theoretically investigate the electronic transport properties of two closely spaced L-shaped semiconductor quantum wires, for different configurations of the output channel widths as well as the distance between the wires. Within the effective-mass approximation, we solve the time-dependent Schrödinger equation using the split-operator technique that allows us to calculate the transmission probability, the total probability current, the conductance, and the wave function scattering between the energy subbands. We determine the maximum distance between the quantum wires below which a relevant non-zero transmission is still found. The transmission probability and the conductance show a strong dependence on the width of the output channel for small distances between the wires.
Authors:
 [1] ;  [2] ;  [3] ; ;  [1] ;  [4] ;  [5] ;  [3]
  1. Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Campus do Pici, 60455-900 Fortaleza, Ceará (Brazil)
  2. (Belgium)
  3. (Brazil)
  4. Instituto de Física, Universidade Federal de Mato Grosso, 78060-900, Cuiabá, Mato Grosso (Brazil)
  5. Department of Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp (Belgium)
Publication Date:
OSTI Identifier:
22492890
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DISTANCE; EFFECTIVE MASS; NANOWIRES; PROBABILITY; QUANTUM WIRES; SCATTERING; SCHROEDINGER EQUATION; SEMICONDUCTOR MATERIALS; TIME DEPENDENCE; TUNNEL EFFECT; WAVE FUNCTIONS