Leviton (quasiparticle)
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A leviton is a collective excitation of a single electron within a metal.[1][2][3][4] It has been mostly studied in two-dimensional electron gases alongside quantum point contacts. The main feature is that the excitation produces an electron pulse without the creation of electron holes. The time-dependence of the pulse is described by a Lorentzian distribution created by a pulsed electric potential.[1][2]
Levitons have also been described in graphene.[5][6]
The leviton is named after Leonid Levitov, who first predicted its existence in 1996.[1]
