Spin state mixing in InAs double quantum dots

Abstract

We quantify the contributions of hyperfine and spin-orbit mediated singlet-triplet mixing in weakly coupled InAs quantum dots by electron transport spectroscopy in the Pauli spin blockade regime. In contrast to double dots in GaAs, the spin-orbit coupling is found to be more than two orders of magnitudes larger than the hyperfine mixing energy. It is already effective at magnetic fields of a few mT, where deviations from hyperfine mixing are observed.

5 pages, 4 figures

References in corpus (6)

• Hyperfine interaction in a quantum dot: Non-Markovian electron spin dynamics
• Direct Measurement of the Spin-Orbit Interaction in a Two-Electron InAs Nanowire Quantum Dot
• Electric Dipole Spin Resonance for Heavy Holes in Quantum Dots
• Spin-Orbit Mediated Control of Spin Qubits
• Suppression of spin relaxation in an InAs nanowire double quantum dot
• Experimental signature of phonon-mediated spin relaxation

Cited by in corpus (3)

• Electron counting in quantum dots
• Dynamics of coupled spins in quantum dots with strong spin-orbit interaction
• Magnetic field induced effects in the high source-drain bias current of weakly coupled vertical quantum dot molecules