Spin excitations in an all-organic double quantum dot molecule
arXiv:1610.04715 · doi:10.1103/PhysRevB.94.165414
Abstract
We realize a strongly coupled double quantum dot in a single all-organic molecule by introducing a non-conjugated bridge in between two identical conjugated moieties. Spin-1/2 Kondo and Kondo enhanced low-energy excitations for respectively the odd and even electron occupation are observed in off-resonant transport. The ground state in the even occupation can be the singlet or the triplet state varying between samples. This observation suggests that both anti-ferromagnetic and ferromagnetic interactions between spins are of the same order of magnitude.
References in corpus (17)
- Spins in few-electron quantum dots
- Electron transport through double quantum dots
- Dependence of Single Molecule Junction Conductance on Molecular Conformation
- Kondo effect in an integer-spin quantum dot
- Large tunable image-charge effects in single-molecule junctions
- Controlled Fabrication of Nanogaps in Ambient Environment for Molecular Electronics
- Electrical manipulation of spin states in a single electrostatically gated transition-metal complex
- Electron-nuclear interaction in 13C nanotube double quantum dots
- 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
- Strong polarization-induced reduction of addition energies in single-molecule nanojunctions
- Transport through graphene double dots
- Detection of a large valley-orbit splitting in silicon with two-donor spectroscopy
- Revealing the Atomic Site-Dependent g Factor within a Single Magnetic Molecule via the Extended Kondo Effect
- Inelastic cotunneling in quantum dots and molecules with weakly broken degeneracies
- Spin excitations in an all-organic double quantum dot molecule