RT Journal Article
T1 Coherent electron dynamics in a two-dimensional random system with mobility edges
A1 Moura, F. A. B. F., de
A1 Lyra, M. L.
A1 Domínguez-Adame Acosta, Francisco
A1 Malyshev, Andrey
AB We study numerically the dynamics of a one-electron wavepacket in a two-dimensional random lattice with long-range correlated diagonal disorder in the presence of a uniform electric field. The time-dependent Schrodinger equation is used for this purpose. We find that the wavepacket displays Bloch-like oscillations associated with the appearance of a phase of delocalized states in the strong correlation regime. The amplitude of oscillations directly reflects the bandwidth of the phase and allows us to measure it. The oscillations reveal two main frequencies whose values are determined by the structure of the underlying potential in the vicinity of the wavepacket maximum.
PB IOP Publishing Ltd.
SN 0953-8984
YR 2007
FD 2007-02-07
LK https://hdl.handle.net/20.500.14352/51891
UL https://hdl.handle.net/20.500.14352/51891
LA eng
NO © Copyright IOP Publishing.This work was partially supported by CNPq, CAPES, and FINEP (Federal Brazilian Agencies), and FAPEAL (Alagoas State Agencies). Work in Madrid was supported by MEC (project FIS2006-01485). VAM acknowledges support from the Stichting voor Fundamenteel Onderzoek der Materie (FOM) and from ISTC (grant no 2679).
NO Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brasil
NO Coordenação de aperfeiçoamento de pessoal de nivel superior (CAPES), Brasil
NO Financiadora de Estudos e Projetos (FINEP), Brasil
NO Fundação de Amparo à Pesquisa do Estado de Alagoas (FAPEAL), Brasil
NO Ministerio de Educación y Ciencia (MEC), España
NO Stichting voor Fundamenteel Onderzoek der Materie (FOM), Holanda
NO International Science and Technology Center (ISTC)
DS Docta Complutense
RD 25 dic 2025