Probing a Kondo correlated quantum dot with spin spectroscopy

Abstract

We investigate Kondo effect and spin blockade observed on a many-electron quantum dot and study the magnetic field dependence. At lower fields a pronounced Kondo effect is found which is replaced by spin blockade at higher fields. In an intermediate regime both effects are visible. We make use of this combined effect to gain information about the internal spin configuration of our quantum dot. We find that the data cannot be explained assuming regular filling of electronic orbitals. Instead spin polarized filling seems to be probable.

4 pages, 5 figures

References in corpus (6)

• Kondo Physics in a Single Electron Transistor
• Kondo effect in an integer-spin quantum dot
• The Addition Spectrum of a Lateral Dot from Coulomb and Spin Blockade Spectroscopy
• The Collapse of the Spin-Singlet Phase in Quantum Dots
• Magnetically induced chessboard pattern in the conductance of a Kondo quantum dot
• Flux-quantum-modulated Kondo conductance in a multielectron quantum dot

Cited by in corpus (6)

• Spins in few-electron quantum dots
• Spin projected unrestricted Hartree-Fock ground states for harmonic quantum dots
• Non-equilibrium spin-current detection with a single Kondo impurity
• Multiple transitions of the spin configuration in quantum dots
• Pfaffian and fragmented states at nu=5/2 in quantum Hall droplets
• Tunable Non-local Coupling between Kondo Impurities