RT Journal Article
T1 Scattering of massless Dirac particles by oscillating barriers in one dimension
A1 González-Santander de la Cruz, Clara
A1 Domínguez-Adame Acosta, Francisco
A1 Fuentevilla, c. H.
A1 Díez, E.
AB We study the scattering of massless Dirac particles by oscillating barriers in one dimension. Using the Floquet theory, we find the exact scattering amplitudes for time-harmonic barriers of arbitrary shape. In all cases the scattering amplitudes are found to be independent of the energy of the incoming particle and the transmission coefficient is unity. This is a manifestation of the Klein tunneling in time-harmonic potentials. Remarkably, the transmission amplitudes for arbitrary sharply-peaked potehtials also become independent of the driving frequency. Conditions for which barriers of finite width can be replaced by sharply-peaked potentials are discussed.
PB Elsevier
SN 0375-9601
YR 2014
FD 2014-02-28
LK https://hdl.handle.net/20.500.14352/34746
UL https://hdl.handle.net/20.500.14352/34746
LA eng
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NO ©2014 Elsevier B.V. All rights reserved.This work was supported by MICINN (projects MAT2010-17180 and FIS2009-07880), JCYL (project SA226U13) and USAL (project KBBB). C.G.-S. acknowledges financial  upport from Comunidad de Madrid and European Social Foundation.
NO Ministerio de Ciencia e Innovación (MICINN)
NO JCYL
NO USAL
NO Comunidad de Madrid
NO European Social Foundation
DS Docta Complutense
RD 18 jul 2024