Singlet-triplet transition in a lateral quantum dot
arXiv:cond-mat/0304688 · doi:10.1103/PhysRevB.68.161303
Abstract
We study transport through a lateral quantum dot in the vicinity of the singlet-triplet transition in its ground state. This transition, being sharp in an isolated dot, is broadened to a crossover by the exchange interaction of the dot electrons with the conduction electrons in the leads. For a generic set of system's parameters, the linear conductance has a maximum in the crossover region. At zero temperature and magnetic field, the maximum is the strongest. It becomes less pronounced at finite Zeeman splitting, which leads to an increase of the background conductance and a decrease of the conductance in the maximum.
References in corpus (17)
- Kondo Physics in a Single Electron Transistor
- A Tunable Kondo Effect in Quantum Dots
- Quantum Effects in Coulomb Blockade
- Kondo effect in an integer-spin quantum dot
- Coulomb blockade at almost perfect transmission
- Direct Coulomb and Exchange Interaction in Artificial Atoms
- Kondo effect in real quantum dots
- Two-stage Kondo effect in a quantum dot at high magnetic field
- Quantum Phase Transition in a Multi-Level Dot
- Enhancement of Kondo effect in quantum dots with an even number of electrons
- Quantum phase transitions in models of coupled magnetic impurities
- Quantum dots with even number of electrons: Kondo effect in a finite magnetic field
- Conduction through a quantum dot near a singlet-triplet transition
- Singlet-triplet transition in a single-electron transistor at zero magnetic field
- Kondo effect induced by a magnetic field
- Kondo Effect in Single Quantum Dot Systems --- Study with Numerical Renormalization Group Method ---
- Multi-parameter scaling of the Kondo effect in quantum dots with an even number of electrons
Cited by in corpus (33)
- Kondo effect in quantum dots
- Cotunneling Spectroscopy in Few-Electron Quantum Dots
- Multi-impurity Anderson model for quantum dots coupled in parallel
- Observation of the underscreened Kondo effect in a molecular transistor
- Properties of anisotropic magnetic impurities on surfaces
- Unified description of correlations in double quantum dots
- Transport spectroscopy of Kondo quantum dots coupled by RKKY interaction
- Universal transport signatures in two-electron molecular quantum dots: gate-tunable Hund's rule, underscreened Kondo effect and quantum phase transitions
- Singlet-Triplet Transition in lateral Quantum Dots: A Numerical Renormalization Group Study
- Correlated electron physics in multilevel quantum dots: phase transitions, transport, and experiment
- Many-particle effects in adsorbed magnetic atoms with easy-axis anisotropy: the case of Fe on CuN/Cu(100) surface
- Enhancement of Kondo effect in multilevel quantum dots
- Two-stage Kondo effect in a four-electron artificial atom
- Kondo effect in coupled quantum dots with RKKY interaction: Finite temperature and magnetic field effects
- Kondo Effect in a Many-Electron Quantum Ring
- Quantum Transport Through a Stretched Spin--1 Molecule
- SU(3) Kondo effect in spinless triple quantum dots
- Two-color Fermi liquid theory for transport through a multilevel Kondo impurity
- Dynamical conductance in the two-channel Kondo regime of a double dot system
- On the relation between the 0.7-anomaly and the Kondo effect: Geometric Crossover between a Quantum Point Contact and a Kondo Quantum Dot
- Capacitively coupled double quantum dot system in the Kondo regime
- Magnetic field effects in few-level quantum dots: theory, and application to experiment
- Orbital fluctuations and strong correlations in quantum dots
- Signatures of quantum phase transitions in parallel quantum dots: Crossover from local-moment to underscreened spin-1 Kondo physics
- Phase transition, spin-charge separation, and spin filtering in a quantum dot
- Dynamical magnetic anisotropy and quantum phase transitions in a vibrating spin-1 molecular junction
- Temperature dependence of electronic transport through molecular magnets in the Kondo regime
- Swapping entangled Kondo resonances in parallel-coupled double quantum dots
- Kondo effect in nanostructures
- Three-orbital Kondo effect in single quantum dot system with plural electrons
- Non-equilibrium transport theory of the singlet-triplet transition: perturbative approach
- Magnetic field induced mixed-level Kondo effect in two-level systems
- Functional renormalization group approach to the singlet-triplet transition in quantum dots