Título
Asymmetrical external effects on transmission, conductance and giant tunneling magnetoresistance in silicene
Autor
ISAAC RODRIGUEZ VARGAS
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Electron transport in a silicene structure, composed of a pair of magnetic gates, is studied
in a ferromagnetic and antiferromagnetic configuration. The transport properties are
investigated for asymmetrical external effects like an electrostatic potential, a magnetic
field and for asymmetrical geometric structure. This theoretical study, has been done using
the matrix transfer method to calculate the transmission, the conductance for parallel and
antiparallel magnetic alignment and the tunneling magnetoresistance (TMR). In Particular,
we have found that the transmission, conductance and magnetoresistance oscillate as a
function of the width of barriers. It is also found that a best control and high values of TMR
spectrum are achieved by an asymmetrical application of the contact voltage. Besides, we
have shown that the TMR is enhanced several orders of magnitude by the combined
asymmetrical magnetization effect with an adequate applied electrostatic potential.
Whereby, the asymmetrical external effects play an important role to improve TMR than
symmetrical ones. Finally, the giant TMR can be flexibly modulated by incident energy and
a specific asymmetrical application of control voltage. These results could be useful to
design filters and digital nanodevices.
Producción Científica de la Universidad Autónoma de Zacatecas UAZ
Fecha de publicación
enero de 2018
Tipo de publicación
Artículo
Recurso de información
http://hdl.handle.net/20.500.11845/616
0749-6036
Formato
application/pdf
Idioma
Inglés
Audiencia
Público en general
Repositorio Orígen
Repositorio Institucional Caxcán
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