In this thesis we consider two random models with Hamiltonians that are separable in polar coordinates. Our purpose is to study the localization and transport properties of two-dimensional systems with correlated disorder. ...

In crystal systems the electronic eigenstates are extended and the eigenergies gather into bands. Crystal systems (ordered systems) are an idealisation and do not existe in nature; for this reason it is necessary to study ...

In the present work, numerical methods are used to analyze random one-dimensional tight binding models. In physical terms, these models describe a quantum particle (\electron") which moves along a one-dimensional chain ...

“El estudio del fenómeno de localización de estados cuánticos en la materia condensada dio origen a uno de los temas más es importantes de la física en las propiedades de transporte de los materiales. Este hecho representa ...

En este trabajo se presenta un estudio teórico y experimental acerca de las propiedades fotónicas de materiales biológicos encontrados en especies de la fauna colombiana, como son las alas de las mariposas Greta oto y ...

In this work, a study of the properties of static plane symmetric space-time is presented, considering randomly distributed matter. More specifically, a space-time model consisting of N parallel infinite planes with disorder ...