Abstract
We show that the onset of soft parametric resonance (SPR) at ω η ω F, where ω F e F o v f / ω O P for hot carriers interacting with optic phonons ω O P in graphene is independent of temperature, whereas η ∼ 0.56 is practically independent of the DC field F o, which makes SPR tunable over a sizeable range of Fo. Our model based on the linearization of the time-dependent Boltzmann transport equation (BTE) predicts a secondary resonance at ω ∼ ω F, emerging from a weak shoulder in the ac current at T 300 K, when the temperature decreases to T 77 K and lower. The two resonances behave differently as scattering at low energy strengthens.
Original language | English (US) |
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Article number | 143108 |
Journal | Applied Physics Letters |
Volume | 103 |
Issue number | 14 |
DOIs | |
State | Published - Sep 30 2013 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)