Soft parametric resonance for hot carriers in graphene

Samwel Sekwao, Jean-Pierre Leburton

Research output: Contribution to journalArticlepeer-review


We show that hot carriers scattered by optic phonons in graphene undergo an anomalous parametric resonance when modulated by an ac field, at about half of the frequency ωF=2πeFvfop, corresponding to ballistic acceleration up to the phonon energy ωF=2πeFvfop in the presence of a dc field F. The resonance occurs in the terahertz range and is tunable with dc electric fields. Dephasing between the current and the ac field also exhibits a nonzero minimum at resonance for weak elastic scattering, while increasing monotonously with ac frequency for strong elastic scattering. The overall effect would also manifest in a long-range spatially varying periodic potential.

Original languageEnglish (US)
Article number155424
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number15
StatePublished - Apr 19 2013

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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