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

Abstract

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.

8 pages, 3 .eps figures

Cited by in corpus (6)

• From four- to two-channel Kondo effect in junctions of XY spin chains
• Spin Exciton in quantum dot with spin orbit coupling in high magnetic field
• Realization of a two-channel Kondo model with Josephson junction networks
• Linear Kondo conductance in a quantum dot
• Magnetic field induced two-channel Kondo effect in multiple quantum dots
• Hamiltonian theory of the strongly-coupled limit of the Kondo problem in the overscreened case