Possibility of two-channel orbital Kondo "spin" 1/2 conductance in a quantum dot

Details Possibility of two-channel orbital Kondo "spin" 1/2 conductance in a quantum dot Possibility of two-channel orbital Kondo "spin" 1/2 conductance in a quantum dot

2001-01-22

arxiv.org/abs/cond-mat/0101341v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 3 .eps figures

Scientific paper

10.1209/epl/i2002-00653-5

We propose that two-channel orbital Kondo ``spin'' 1/2 conductance can be measured in a quantum dot at Coulomb Blockade with an odd number of electrons with contacts in a pillar configuration, if an orthogonal magnetic field induces an appropriate level crossing. At the zero-temperature strong coupling fixed point the conductance reaches the unitarity limit with a non-Fermi liquid sqrt(T)-law.

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