Observation of Hysteretic Transport Due to Dynamic Nuclear Spin Polarization in a GaAs Lateral Double Quantum Dot

Abstract

We report a new transport feature in a GaAs lateral double quantum dot that emerges only for magnetic field sweeps and shows hysteresis due to dynamic nuclear spin polarization (DNP). This DNP signal appears in the Coulomb blockade regime by virtue of the finite inter-dot tunnel coupling and originates from the crossing between ground levels of the spin triplet and singlet extensively used for nuclear spin manipulations in pulsed gate experiments. The unexpectedly large signal intensity is suggestive of unbalanced DNP between the two dots, which opens up the possibility of controlling electron and nuclear spin states via DC transport.

5 pages, 4 figures

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Cited by in corpus (11)

• Nuclear magnetization in gallium arsenide quantum dots at zero magnetic field
• Large nuclear spin polarization in gate-defined quantum dots using a single-domain nanomagnet
• Electric-dipole-induced spin resonance in a lateral double quantum dot incorporating two single domain nanomagnets
• Superradiance-like Electron Transport through a Quantum Dot
• Nuclear Spin Dynamics in Double Quantum Dots: Multi-Stability, Dynamical Polarization, Criticality and Entanglement
• Electrical current and coupled electron-nuclear spin dynamics in double quantum dots
• Suppression of Zeeman gradients by nuclear polarization in double quantum dots
• Simulations of electric-dipole spin resonance for spin-orbit-coupled quantum dots in Overhauser field: fractional resonances and selection rules
• Temperature-dependent dynamical nuclear polarization bistabilities in double quantum dots in the spin-blockade regime
• Spontaneous and resonant lifting of the spin blockade in nanowire quantum dots
• Probing a Single Nuclear Spin in a Silicon Single Electron Transistor