Starting from Dirac equation for an idealized graphene layer together with the Lorentz gauge condition, we describe plasmon propagation without making recourse to a classical Kubo-Drude electron model. Two excitation modes are separately considered : 1) excitation by a TM-polarized wave of given vector potential amplitude (voltage source), 2) excitation by current injection (e.g. via a probe)(current source). Losses are accounted for globally by means of a lifetime term. A simple LCR model of the surface admittance emerges that is valid up to several THz and beyond, even under impulsive time-excitation
Eigenvalues approach for the analysis of plasmon propagation on a graphene layer / Pierantoni, L.; Mencarelli, D.; Stocchi, M.; Rozzi, T.. - ELETTRONICO. - (2017), pp. 888-891. (Intervento presentato al convegno 20th European Microwave Week (EuMW 2017) tenutosi a Nuremberg, Germany nel Oct. 8-13, 2017) [10.23919/EuMC.2017.8230987].
Eigenvalues approach for the analysis of plasmon propagation on a graphene layer
Pierantoni, L.
;Mencarelli, D.;Stocchi, M.;Rozzi, T.
2017-01-01
Abstract
Starting from Dirac equation for an idealized graphene layer together with the Lorentz gauge condition, we describe plasmon propagation without making recourse to a classical Kubo-Drude electron model. Two excitation modes are separately considered : 1) excitation by a TM-polarized wave of given vector potential amplitude (voltage source), 2) excitation by current injection (e.g. via a probe)(current source). Losses are accounted for globally by means of a lifetime term. A simple LCR model of the surface admittance emerges that is valid up to several THz and beyond, even under impulsive time-excitationI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
