Regensburg 2002 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 12: Niedrigdimensionale Systeme, Magnetotransport II

TT 12.4: Vortrag

Dienstag, 12. März 2002, 15:45–16:00, H18

Multiparticle effects in non-equilibrium tunneling and field emission from Luttinger liquids and carbon nanotubes. — •Andrei Komnik and Alexander O. Gogolin — Department of Mathematics, Imperial College, London, UK

We study the influence of the multiparticle processes on the total energy distribution function (TED) of particles tunneling through a standard tunneling junction biased by a finite voltage. Just below the Fermi edge, we find a power-law vanishing current distribution with the density of states exponent. The current distribution above the Fermi edge owes its existence to a peculiar interplay of interactions and correlated tunnelling. It displays a non-trivial power-law divergence just above the Fermi energy. Experimental consequences of these effects and their influence in dimensions higher than one are discussed for various setups from simple tunneling junctions to field emitters and quantum dots.