Charge scattering from spatially asymmetric antidots patterned on graphene has been investigated, in the ballistic scale. The Scattering Matrix (SM) approach, formally equivalent to the Non Equilibrium Green's Function method, but particularly suitable for large structures, has been applied in order to evaluate the electron/hole distribution in patterned graphene upon injection of charge from metal contacts. The mathematical formulation of the SM method has been reviewed and commented. The presented work can be the basis for a systematic study of the Ratchet effect in the above kind of structure. A completely deterministic characterization of this effect is proposed, based on the scattering of asymmetric defects under external electromagnetic excitation. The Ratchet effect could be usefully exploited to realize high frequency detectors, sensors, and harvesting devices

Ballistic Ratchet effect on patterned graphene / Bellucci, S; Pierantoni, Luca; Mencarelli, Davide. - In: INTEGRATED FERROELECTRICS. - ISSN 1058-4587. - STAMPA. - 176:1(2016), pp. 28-36. [10.1080/10584587.2016.1185883]

Ballistic Ratchet effect on patterned graphene

PIERANTONI, Luca;MENCARELLI, Davide
2016-01-01

Abstract

Charge scattering from spatially asymmetric antidots patterned on graphene has been investigated, in the ballistic scale. The Scattering Matrix (SM) approach, formally equivalent to the Non Equilibrium Green's Function method, but particularly suitable for large structures, has been applied in order to evaluate the electron/hole distribution in patterned graphene upon injection of charge from metal contacts. The mathematical formulation of the SM method has been reviewed and commented. The presented work can be the basis for a systematic study of the Ratchet effect in the above kind of structure. A completely deterministic characterization of this effect is proposed, based on the scattering of asymmetric defects under external electromagnetic excitation. The Ratchet effect could be usefully exploited to realize high frequency detectors, sensors, and harvesting devices
2016
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/246080
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact