Theory of charge sensing in quantum-dot structures
arXiv:cond-mat/0411478 · doi:10.1103/PhysRevLett.94.076802
Abstract
Charge sensing in quantum-dot structures is studied by an exactly solvable reduced model and numerical density-matrix renormalization group methods. Charge sensing is characterized by the repeated cycling of the occupation of current-carrying states due to the capacitive coupling to trap states which are weakly coupled to the leads. In agreement with recent experiments, it results in a variety of characteristic behaviors ranging from asymmetric Coulomb-blockade peaks to sawtooth- and dome-like structures. Temperature introduces distinct asymmetric smearing of these features and correlations in the conductance provide a fingerprint of charge-sensing behavior.
5 pages, 4 figures
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- A quantum criticality perspective on the charging of narrow quantum-dot levels
- Transmission phase lapses in quantum dots: the role of dot-lead coupling asymmetry
- Friedel phase discontinuity and bound states in the continuum in quantum dot systems
- Level-occupation switching of the Quantum Dot, and phase anomalies in mesoscopic interferometry
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- Unveiling non-Abelian statistics of vortex Majorana bound states in iron-based superconductors using fermionic modes
- Evolution of the transmission phase through a Coulomb-blockaded Majorana wire
- The Functional Renormalization Group for Zero-Dimensional Quantum Systems in and out of Equilibrium
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- Compressibility enhancement in an almost staggered interacting Harper model
- Charge dynamics effects in conductance through a large semi-open quantum dot
- Two gate-voltage periods in a metallic-nanoparticle based single-electron transistor