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GRAFENO Y PROPIEDADES DE TRANSPORTE ELÉCTRICO EN INTERFASES GRAFENO-SUPERCONDUCTOR
GRAPHENE AND ELECTRIC TRANSPORT PROPERTIES IN GRAPHENE-SUPERCONDUCTOR INTERFACES
Keywords:
Grafeno, puntos de Dirac, paradoja de Klein, reflexión de Andreev, superconductividad, estados ligados. (es)Graphene, Dirac points, Klein paradox, Andreev reflection, superconductivity, bound states. (en)
El grafeno es una estructura bidimensional de carbono que tiene propiedades electrónicas que no son usuales y donde los electrones son descritos por la ecuación de Dirac. Este material permite establecer una analogía entre la física de partículas y la materia condensada. La obtención del grafeno hace pocos años ha incentivado una gran cantidad de trabajos experimentales y teóricos con el propósito de poder entender y manipular sus propiedades. Actualmente se han investigado diferentes junturas compuestas por interfases grafeno-superconductor, a saber: GS, GIS, SGS, IGS (I:aislante, G: grafeno, S: superconductor), en las cuales la existencia de reflexiones de Andreev normales y especulares ha cobrado gran interés. En este trabajo hacemos una introducción a las propiedades básicas del grafeno y una breve revisión sobre trabajos acerca de interfases grafeno-superconductor.
Graphene is a two dimensional carbon structure, which possesses unusual electronic properties, whose electrons are described by the Dirac equation. This material allows to establish an analogy between condensed matter and particle physics. The graphene production a few years ago has encouraged a great theoretical and experimental work in order to understand and manipulate its properties. Actually different junctions consisting of graphene-superconductor interfaces have been investigated, namely GS, GIS, SGS, IGS (I:insulator, G:graphene, S: superconductor), in which the existence of normal and specular Andreev reflections have raised great interest. In this paper we introduce the basic properties of graphene and we do a brief review of papers about graphene - superconductor interfaces.
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