We show that the onset of soft parametric resonance (SPR) at ω = ηωF, where ωF = eFovf/ℏωOP for hot carriers interacting with optic phonons ℏωOP in graphene is independent of temperature, whereas η ∼ 0.56 is practically independent of the DC field Fo, which makes SPR tunable over a sizeable range ... [Appl. Phys. Lett. 103, 143108 (2013)] published Tue Oct 01, 2013.
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