Thermal effectsThermal effectsare playing a crucial role for the design of electron nanoscale devices. The present contribution deals with charge and phonon transport under an applied external electric field in a suspended monolayer of graphene. A major question is represented by the phonon-phonon collision operator involving in general a three particle scattering mechanism. To model the phonon-phonon interactions a relaxation time approximation is employed. This requires the introduction of a local equilibrium phonon temperature whose definition is still a matter of debate for a general non equilibrium situation. Here, two different approaches are presented and discussed.
Charge and Phonon Transport in Suspended Monolayer Graphene / Coco, Marco; Mascali, Giovanni; Romano, Vittorio. - (2020), pp. 115-123. (Intervento presentato al convegno Scientific Computing in Electrical Engineering tenutosi a Taormina, Italy nel September 2018) [10.1007/978-3-030-44101-2_11].
Charge and Phonon Transport in Suspended Monolayer Graphene
Coco MarcoPrimo
;
2020-01-01
Abstract
Thermal effectsThermal effectsare playing a crucial role for the design of electron nanoscale devices. The present contribution deals with charge and phonon transport under an applied external electric field in a suspended monolayer of graphene. A major question is represented by the phonon-phonon collision operator involving in general a three particle scattering mechanism. To model the phonon-phonon interactions a relaxation time approximation is employed. This requires the introduction of a local equilibrium phonon temperature whose definition is still a matter of debate for a general non equilibrium situation. Here, two different approaches are presented and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
