Resistive detection of nuclear spins in a single quantum dot under Kondo effect regime
arXiv:1301.7730 · doi:10.1103/PhysRevB.87.081303
Abstract
We study dynamic polarization and resistive detection of nuclear spins in a semiconductor quantum dot (QD) under the Kondo effect regime. We find that the differential conductance spectra of the QD exhibit hysteresis under the Kondo effect regime in magnetic fields. Relevance of nuclear spins to the hysteresis is confirmed by the detection of nuclear magnetic resonance signals by monitoring the differential conductance. We attribute the origin of the hysteresis to the dynamic nuclear spin polarization (DNP) induced in the QD. Using the DNP, we demonstrate nuclear spin relaxation rate measurements in the QD under the Kondo effect regime.
5 pages, 6 figures, accepted for publication in Phys. Rev. B
References in corpus (11)
- Kondo Physics in a Single Electron Transistor
- A Tunable Kondo Effect in Quantum Dots
- Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
- The Kondo Effect in the Unitary Limit
- Nuclear spin induced oscillatory current in spin-blocked quantum dots
- Electrically-Controlled Nuclear Spin Polarization and Relaxation by Quantum-Hall states
- Nuclear Spins in Nanostructures
- Electrical polarization of nuclear spins in a breakdown regime of quantum Hall effect
- Observation of the Kondo Effect in a Spin-3/2 Hole Quantum Dot
- Dynamic nuclear polarization induced by breakdown of fractional quantum Hall effect
- Nuclear Polarization in Quantum Point Contacts in an In-Plane Magnetic Field