title: Resolving spin-orbit- and hyperfine-mediated electric dipole spin resonance in a quantum dot.
abstract: We investigate the electric manipulation of a single-electron spin in a single gate-defined quantum dot. We observe that so-far neglected differences between the hyperfine- and spin-orbit-mediated electric dipole spin resonance conditions have important consequences at high magnetic fields. In experiments using adiabatic rapid passage to invert the electron spin, we observe an unusually wide and asymmetric response as a function of the magnetic field. Simulations support the interpretation of the line shape in terms of four different resonance conditions. These findings may lead to isotope-selective control of dynamic nuclear polarization in quantum dots.
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology, PO Box 5046, 2600 GA Delft, The Netherlands. m.shafiei@tudelft.nl
authors.forename: M
authors.initials: M
authors.lastname: Shafiei
authors.forename: K C
authors.initials: KC
authors.lastname: Nowack
authors.forename: C
authors.initials: C
authors.lastname: Reichl
authors.forename: W
authors.initials: W
authors.lastname: Wegscheider
authors.forename: L M K
authors.initials: LM
authors.lastname: Vandersypen