Frictional drag between coupled two-dimensional charge systems is commonly viewed as a second order effect arising either from screened Coulomb interaction, or phonon exchange. We point out that for single-photon exchange the first order contribution does not have to vanish even at T = 0, and evaluate this contribution for simple models.
Virtual photon contribution to frictional drag in double-layer devices / A.Donarini, R.Ferrari, A.P.Jauho, L.G.Molinari. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - 312:1-2(2003), pp. 123-129.
Virtual photon contribution to frictional drag in double-layer devices
R.FerrariSecondo
;L.G.MolinariUltimo
2003
Abstract
Frictional drag between coupled two-dimensional charge systems is commonly viewed as a second order effect arising either from screened Coulomb interaction, or phonon exchange. We point out that for single-photon exchange the first order contribution does not have to vanish even at T = 0, and evaluate this contribution for simple models.
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