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Dynamics of electrons in gradient nanostructures (exactly solvable model)
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SYSNO ASEP 0341167 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dynamics of electrons in gradient nanostructures (exactly solvable model) Author(s) Shvartsburg, A. B. (RU)
Kuzmiak, Vladimír (URE-Y) RID
Petite, G. (FR)Source Title European Physical Journal B. - : Springer - ISSN 1434-6028
Roč. 72, č. 1 (2009), s. 77-88Number of pages 12 s. Language eng - English Country DE - Germany Keywords wave propagation ; tunneling ; electronic transport Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering CEZ AV0Z20670512 - URE-Y (2005-2011) UT WOS 000271420300007 DOI 10.1140/epjb/e2009-00319-8 Annotation A flexible multi-parameter exactly solvable model of potential profile, containing an arbitrary number of continuous smoothly shaped barriers and wells, both equal or unequal, characterized by finite values and continuous profiles of the potential and of its gradient, is presented. We demonstrate an influence of both gradient and curvature of these potentials on the electron transport and spectra of symmetric and asymmetric double-well (DW) potentials. The use of this model is simplified due to one to one correspondence between the algorithms of calculation of the transmittance of convex barriers and energy spectra of concave wells. We have shown that the resonant contrast between maximum and minimum in over-barrier reflectivity of curvilinear barrier exceeds significantly the analogous effect for rectangular barrier with the same height and width. Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2010
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