Magnetic field switching in parallel quantum dots

2008/03/31 by Feng Li, Xin-Qi Li, Wei-Min Zhang +1 · 20 citations
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Coulomb blockade #Current (fluid) #Field (mathematics) #Flux (metallurgy) #Magnetic field #Magnetic flux #Magnetic flux quantum #Quantum and electron transport phenomena #Quantum dot #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.other #quant-ph

paper · pdf · doi:10.1209/0295-5075/88/37001

published in Europhysics Letters (EPL) 88(3), 37001 (Institute of Physics) · additional explanations added, Europhysics Letters, in press

arxiv created 2009/10/29 · openalex publication_date 2009/11/01 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We show that the Coulomb blockade in parallel dots pierced by magnetic flux Φ completely blocks the resonant current for any value of Φ except for integer multiples of the flux quantum Φ 0 . This non-analytic (switching) dependence of the current on Φ arises only when the dot states that carry the current are of the same energy. The time needed to reach the steady state, however, diverges when Φ→ n Φ 0 .

Citations

• Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer
• Phase Coherence in the Inelastic Cotunneling Regime
• Spontaneous Relaxation of a Charge Qubit under Electrical Measurement
• Noise of a quantum dot system in the cotunneling regime
• Behavior of Electronic Interferometers in the Nonlinear Regime
• Dynamics of the dissipative two-state system