Two-Stage Kondo Effect and Kondo Box Level Spectroscopy in a Carbon Nanotube
arXiv:1010.1551 · doi:10.1103/PhysRevB.82.161411
Abstract
The concept of the "Kondo box" describes a single spin, antiferromagnetically coupled to a quantum dot with a finite level spacing. Here, a Kondo box is formed in a carbon nanotube interacting with a localized electron. We investigate the spins of its first few eigenstates and compare them to a recent theory. In an 'open' Kondo-box, strongly coupled to the leads, we observe a non-monotonic temperature dependence of the nanotube conductance, which results from a competition between the Kondo-box singlet and the 'conventional' Kondo state that couples the nanotube to the leads.
5 pages, 3 figures
References in corpus (6)
- Strongly correlated regimes in a double quantum-dot device
- Two-stage Kondo effect in side-coupled quantum dots: Renormalized perturbative scaling theory and Numerical Renormalization Group analysis
- Transport through quantum dots in mesoscopic circuits
- Kondo screening cloud and the charge staircase in one-dimensional mesoscopic devices
- Resonant Tunneling in a Dissipative Environment
- Ground State and Excitations of Quantum Dots with "Magnetic Impurities"
Cited by in corpus (13)
- Quantum transport in carbon nanotubes
- Observation of the Kondo Screening Cloud of Micron Lengths
- How to directly measure a Kondo cloud's length
- Josephson-Kondo screening cloud in circuit quantum electrodynamics
- Competition between Kondo screening and indirect magnetic exchange in a quantum box
- Transport through side-coupled double quantum dots: from weak to strong interdot coupling
- Transport through side-coupled multilevel double quantum dots in the Kondo regime
- Screening mechanisms in magnetic nanostructures
- Gate-tunable split Kondo effect in a carbon nanotube quantum dot
- Boundary and finite-size effects in the competition between indirect magnetic exchange and Kondo screening
- Quantum entanglement in a pure state of strongly correlated quantum impurity systems
- Effects of electron-phonon coupling in the Kondo regime of a two-orbital molecule
- Kondo effect in Lieb's ferrimagnetic system on the T-shaped bipartite lattice