TY - JOUR
T1 - Vortex core switching by coherent excitation with single in-plane magnetic field pulses
AU - Weigand, Markus
AU - Van Waeyenberge, Bartel
AU - Vansteenkiste, Arne
AU - Curcic, Michael
AU - Sackmann, Vitalij
AU - Stoll, Hermann
AU - Tyliszczak, Tolek
AU - Kaznatcheev, Konstantine
AU - Bertwistle, Drew
AU - Woltersdorf, Georg
AU - Back, Christian H.
AU - Schütz, Gisela
PY - 2009/2/17
Y1 - 2009/2/17
N2 - The response of magnetic vortex cores to subnanosecond in-plane magnetic field pulses was studied by time-resolved x-ray microscopy. Vortex core reversal was observed and the switching events were located in space and time. This revealed a mechanism of coherent excitation by the leading and trailing edges of the pulse, lowering the field amplitude required for switching. The mechanism was confirmed by micromagnetic simulations and can be understood in terms of gyration around the vortex equilibrium positions, displaced by the applied field.
AB - The response of magnetic vortex cores to subnanosecond in-plane magnetic field pulses was studied by time-resolved x-ray microscopy. Vortex core reversal was observed and the switching events were located in space and time. This revealed a mechanism of coherent excitation by the leading and trailing edges of the pulse, lowering the field amplitude required for switching. The mechanism was confirmed by micromagnetic simulations and can be understood in terms of gyration around the vortex equilibrium positions, displaced by the applied field.
UR - http://www.scopus.com/inward/record.url?scp=61349186451&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.102.077201
DO - 10.1103/PhysRevLett.102.077201
M3 - Article
AN - SCOPUS:61349186451
SN - 0031-9007
VL - 102
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
M1 - 077201
ER -