Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot
arXiv:cond-mat/0507309 · doi:10.1103/PhysRevB.72.245313
Abstract
An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device depends strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear when the Kondo temperature of the dot on the ABI is significantly smaller than the nominal one of the quantum dot (when not on the interferometer), leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift
13 pages, 10 figures
References in corpus (7)
- Magnetic field dependent transmission phase of a double dot system in a quantum ring
- Kondo effect in complex mesoscopic structures
- Transport through quantum dots in mesoscopic circuits
- The Kondo Screening Cloud around a Quantum Dot: Large-scale numerical Results
- Measuring the Kondo effect in the Aharonov-Bohm interferometer
- Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations
- Phase measurements in open and closed Aharonov-Bohm interferometers
Cited by in corpus (19)
- On the applicability of the equations-of-motion technique for quantum dots
- Transmission Phase in the Kondo Regime Revealed in a Two-Path Interferometer
- Tunable pseudogap Kondo effect and quantum phase transitions in Aharonov-Bohm interferometers
- Engineering the Kondo and Fano effects in double quantum dots
- Transport Spectroscopy of a Kondo quantum dot coupled to a finite size grain
- The Influence of Interference on the Kondo Effect in a Quantum Dot
- Transport through a multiply connected interacting meso-system using the Keldysh formalism
- Measurement of the Transmission Phase of an Electron in a Quantum Two-Path Interferometer
- Scaling analysis of Kondo screening cloud in a mesoscopic ring with an embedded quantum dot
- Nonequilibrium Steady States and Fano-Kondo Resonances in an AB Ring with a Quantum Dot
- Interference of heavy holes in an Aharonov-Bohm ring
- Transmission phase shifts of Kondo impurities
- Transport properties of a molecule embedded in an Aharonov-Bohm interferometer
- Interaction effects in Aharonov-Bohm-Kondo Rings
- Mesoscopic phase behavior in a quantum dot around crossover between single-level and multilevel transport regimes
- Conductance of closed and open long Aharonov-Bohm-Kondo rings
- Spin Current Generation as a Nonequilibrium Kondo Effect in a Spin-orbit Mesoscopic Interferometer
- Andreev bound state spectroscopy of a quantum-dot-based Aharonov-Bohm interferometer with superconducting terminals
- Spectroscopic analysis of finite size effects around a Kondo quantum dot