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The Kondo crossover in shot noise of a single quantum dot with orbital degeneracy
Kondo crossover orbital degeneracy
2010/11/19
We investigate out of equilibrium transport through an orbital Kondo system realized in a single quantum dot, described by the multiorbital impurity Anderson model. Shot noise and current are calculat...
On the Ground State of Spin Systems with Orbital Degeneracy
SU(4) symmetry spin liquid spin order
orbital order
2007/8/15
2002Vol.37No.1pp.105-110DOI:
On the Ground State of Spin Systems with Orbital Degeneracy
SHI Da-Ning,1,2 LI Ning1 and YANG Zhi-Hong1
1 College of Science, Nanjing Univ...
The Hubbard model for electrons with orbital degeneracy is shown to have an underlying SU_d(4) symmetry of spin-orbital double. A hidden charge SU_c(4) symmetry is exposed and an extended Lieb-Mattis ...