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Título:	Stationary states and phase diagram for a model of the Gunn effect under realistic boundary conditions
Autor/a:	Gomila Lluch, Gabriel; Rubí Capaceti, José Miguel; Rodríguez Cantalapiedra, Inma; Bonilla, L. L.
Otros autores:	Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
Abstract:	A general formulation of boundary conditions for semiconductor-metal contacts follows from a phenomenological procedure sketched here. The resulting boundary conditions, which incorporate only physically well-defined parameters, are used to study the classical unipolar drift-diffusion model for the Gunn effect. The analysis of its stationary solutions reveals the presence of bistability and hysteresis for a certain range of contact parameters. Several types of Gunn effect are predicted to occur in the model, when no stable stationary solution exists, depending on the value of the parameters of the injecting contact appearing in the boundary condition. In this way, the critical role played by contacts in the Gunn effect is clearly stablished
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Física -Phase transformations (Statistical physics) -Equations of state -Crystallography -Statistical mechanics -Soft condensed matter -Transformacions de fase (Física estadística) -Equacions d'estat
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Tipo de documento:	Artículo - Versión publicada Artículo
Editor:	The American Physical Society
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