Interacting electrons in a nearly straight quantum wire
T. Rejec, A. Ramsak, J. H. Jefferson
Abstract
The conductance threshold of a clean nearly straight quantum wire in which a single electron is bound is studied. This exhibits spin-dependent conductance anomalies on the rising edge to the first conductance plateau, near G=0.25(2e2/h) and G=0.7(2e2/h), related to a singlet and triplet resonances respectively. We show that the problem may be mapped on to an Anderson-type of Hamiltonian and calculate the energy dependence of the energy parameters in the resulting model.
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