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Stationary states and phase diagram for a model of the Gunn effect under realistic boundary conditions
Gomila Lluch, Gabriel; Rubí Capaceti, José Miguel; Rodríguez Cantalapiedra, Inma; Bonilla, L. L. (Luis López), 1956-
Universitat de Barcelona
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 established.
26-07-2011
Física estadística
Termodinàmica
Sistemes dinàmics diferenciables
Matèria condensada
Statistical physics
Thermodynamics
Differentiable dynamical systems
Condensed matter
(c) American Physical Society, 1997
Artículo
The American Physical Society
         

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