Ab initiopseudopotential method for the calculation of conductance in quantum wires
- 15 January 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 59 (3), 2267-2275
- https://doi.org/10.1103/physrevb.59.2267
Abstract
We develop a method to incorporate the Kleinman-Bylander–type ab initio pseudopotential in the calculation of conductance in quantum wires using the Landauer formalism. This method is computationally efficient and mathematically stable; it does not involve singularity in inverting the transfer matrix. We also describe the ab initio nonlocal pseudopotential method to calculate the complex band structure that is required in the wave-function matching between the resistive material and the realistic metal probe. We present, as an example, the calculated conductance of the carbon nanotube with a pentagon-heptagon-pair defect in the low-temperature limit.
Keywords
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