Mathematical modelling of charge transport in graphene heterojunctions
| Autor: | Vittorio Romano, Claudia Negulescu, Giovanni Nastasi, Luigi Barletti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Numerical Analysis device simulation drift-diffusion equations Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Graphene FOS: Physical sciences Charge (physics) Heterojunction quantum interface conditions interpolation coefficient law.invention electron and hole transport Transmission (telecommunications) law Modeling and Simulation Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Charge carrier Scattering theory Device simulation Quantum Milne problem |
| Popis: | A typical graphene heterojunction device can be divided into two classical zones, where the transport is basically diffusive, separated by a "quantum active region" (e.g., a locally gated region), where the charge carriers are scattered according to the laws of quantum mechanics. In this paper we derive a mathematical model of such a device, where the classical regions are described by drift-diffusion equations and the quantum zone is seen as an interface where suitable transmission conditions are imposed that take into account the quantum scattering process. Numerical simulations show good agreement with experimental data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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