Dynamical symmetries in Kondo tunneling through complex quantum dots

Details Dynamical symmetries in Kondo tunneling through complex quantum dots Dynamical symmetries in Kondo tunneling through complex quantum dots

2002-06-05

arxiv.org/abs/cond-mat/0206050v1

Phys. Rev. Lett., 89 (2002) 156602

Physics

Condensed Matter

Strongly Correlated Electrons

4 two-column pages with 4 encapsuled figures

Scientific paper

10.1103/PhysRevLett.89.156602

Kondo tunneling reveals hidden SO(n) dynamical symmetries of evenly occupied quantum dots. As is exemplified for an experimentally realizable triple quantum dot in parallel geometry, the possible values n=3,4,5,7 can be easily tuned by gate voltages. Following construction of the corresponding o(n) algebras, scaling equations are derived and Kondo temperatures are calculated. The symmetry group for a magnetic field induced anisotropic Kondo tunneling is SU(2) or SO(4).

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