Searched for: collection%3Air
(1 - 8 of 8)
document
Michal, V.P. (author), Fujita, T. (author), Baart, T.A. (author), Danon, J. (author), Reichl, C (author), Wegscheider, W (author), Vandersypen, L.M.K. (author), Nazarov, Y.V. (author)
We study the Zeeman splitting in lateral quantum dots that are defined in GaAs-AlGaAs heterostructures by means of split gates. We demonstrate a nonlinear dependence of the splitting on magnetic field and its substantial variations from dot to dot and from heterostructure to heterostructure. These phenomena are important in the context of...
journal article 2018
document
Danon, J. (author), Nazarov, Y.V. (author)
In this work we present a new formalism to evaluate the nuclear spin dynamics driven by hyperfine interaction with nonequilibrium electron spins. To describe the dynamics up to second order in the hyperfine coupling it suffices to evaluate the susceptibility and fluctuations of the electron spin. Our approach does not rely on a separation of...
journal article 2011
document
Nadj-Perge, S. (author), Frolov, S.M. (author), Van Tilburg, J.W.W. (author), Danon, J. (author), Nazarov, Y.V. (author), Algra, R. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author)
We have achieved the few-electron regime in InAs nanowire double quantum dots. Spin blockade is observed for the first two half-filled orbitals, where the transport cycle is interrupted by forbidden transitions between triplet and singlet states. Partial lifting of spin blockade is explained by spin-orbit and hyperfine mechanisms that enable...
journal article 2010
document
Danon, J. (author), Vink, I.T. (author), Koppens, F.H.L. (author), Nowack, K.C. (author), Vandersypen, L.M.K. (author), Nazarov, Y.V. (author)
We observe multiple stable states of nuclear polarization and nuclear self-tuning over a large range of fields in a double quantum dot under conditions of electron spin resonance. The observations can be understood within an elaborated theoretical rate equation model for the polarization in each of the dots, in the limit of strong driving. This...
journal article 2009
document
Danon, J. (author), Nazarov, Y.V. (author)
We study nuclear spin dynamics in a quantum dot close to the conditions of electron spin resonance. We show that at a small frequency mismatch, the nuclear field detunes the resonance. Remarkably, at larger frequency mismatch, its effect is opposite: The nuclear system is bistable, and in one of the stable states, the field accurately tunes the...
journal article 2008
document
Danon, J. (author), Nazarov, Y.V. (author)
We study electronic transport through a ferromagnet normal-metal ferromagnet system and we investigate the effect of hyperfine interaction between electrons and nuclei in the normal-metal part. A switching of the magnetization directions of the ferromagnets causes nuclear spins to precess. We show that the effect of this precession on the...
journal article 2006
document
Tobiska, J. (author), Danon, J. (author), Snyman, I. (author), Nazarov, Yu.V. (author)
journal article 2006
document
Danon, J. (author), Nazarov, Y.V. (author)
We study electron transport in a double quantum dot in the Pauli spin blockade regime in the presence of strong spin-orbit coupling. The effect of spin-orbit coupling is incorporated into a modified interdot tunnel coupling. We elucidate the role of the external magnetic field, the nuclear fields in the dots, and the spin relaxation. We find...
journal article
Searched for: collection%3Air
(1 - 8 of 8)