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Enhancement of the tunneling density of states in Tomonaga--Luttinger Liquids

Yuval Oreg, Alexander M. Finkel'stein

cond-matarXiv:cond-mat/9601020

Abstract

We have calculated the tunneling density of states (DOS) at the location of a backward scattering defect for quantum wires and for edge state electrons in quantum Hall systems. A singular enhancement of the DOS arises as a result of the combined effect of multiple backward scattering together with a repulsive electron---electron interaction.

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