Kondo Effect in a Many-Electron Quantum Ring
arXiv:cond-mat/0406247 · doi:10.1103/PhysRevLett.93.176803
Abstract
The Kondo effect is investigated in a many-electron quantum ring as a function of magnetic field. For fields applied perpendicular to the plane of the ring a modulation of the Kondo effect with the Aharonov-Bohm period is observed. This effect is discussed in terms of the energy spectrum of the ring and the parametrically changing tunnel coupling. In addition, we use gate voltages to modify the ground-state spin of the ring. The observed splitting of the Kondo-related zero-bias anomaly in this configuration is tuned with an in-plane magnetic field.
4 pages, 4 figures
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- Tunable pseudogap Kondo effect and quantum phase transitions in Aharonov-Bohm interferometers
- Finite-temperature conductance signatures of quantum criticality in double quantum dots
- SU(3) Kondo effect in spinless triple quantum dots
- Engineering the Kondo and Fano effects in double quantum dots
- Spin exchange in quantum rings and wires in the Wigner-crystal limit
- Tuning Kinetic Magnetism of Strongly Correlated Electrons via Staggered Flux
- Fractional periodicity of persistent current in coupled quantum rings
- Transmission in double quantum dots in the Kondo regime: Quantum-critical transitions and interference effects
- Electromagnetic Pulse Driven Spin-dependent Currents in Semiconductor Quantum Rings
- Time-dependent wave packet simulations of transport through Aharanov-Bohm rings with an embedded quantum dot