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: http://num-meth.srcc.msu.ru/english/zhurnal/tom_2012/v13r127.html
Дата изменения: Mon Mar 26 15:23:18 2012 Дата индексирования: Mon Oct 1 22:58:22 2012 Кодировка: ISO8859-5 |
"Supercomputer modeling of semiconductor quantum nanosystems" Tkachenko O.A., Tkachenko V.A. |
Numerical research of electron transport and quantum effects in nanostructures often requires solving a number of large problems dependent on external parameters like temperature, magnetic field, chemical potential, or applied voltage. When a problem fits computing capability of a single node, these calculations are naturally parallel. Taking into account the realistic geometry of structures or electron-electron interaction allowed us to find new physical effects: redirection of the ballistic electron flow in the Y-branch, fluctuations of phase and temperature dependence of Aharonov-Bohm oscillations in the ring interferometer, 0.7-feature of conductance in the quantum point contact, formation of fractal terrases of voltage distribution, and point ohmic heating in disordered antidot lattice. Keywords: numerical modeling, nanostructures, two-dimensional electron gas, Landauer formula, scattering, Schroedinger equation, Poisson equation
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Tkachenko O.A. e-mail: avisaeva@gmail.com; Tkachenko V.A. e-mail: grachevea@gmail.com |
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