Print Email Facebook Twitter Coherent dynamics of atomic spins on a surface Title Coherent dynamics of atomic spins on a surface Author Veldman, L.M. (TU Delft QN/Otte Lab) Contributor Otte, A. F. (promotor) van der Sar, T. (copromotor) Degree granting institution Delft University of Technology Date 2024-05-27 Abstract This thesis presents experiments on the free, coherent spin dynamics ofmagnetic nanostructures built out of individual titanium atoms adsorbed on bilayer MgOislands grown on a Ag(100) crystal inside a scanning tunneling microscope (STM).We use the exchange field of the spin-polarized probe tip to tune the eigenstates of the magnetic structures to superpositions of the Zeeman product states. These superpositions appear as avoided level crossings of the eigenenergies as a function of tip-atom distance and are detected through electron spin resonance (ESR) measurements. Subsequently,we put the STMtip at the position where we detect an avoided crossing and we perform a DC pump-probe experiment. Here, the pump pulse causes a single spin flip on the atom under state tip which is then allowed to evolve freely for some time t until it is measured by the subsequent probe pulse. By varying the time t between pump and probe over many experiments, we are able to trace out the evolution of the spin under the tip with nanosecond time resolution.... Subject scanning tunneling microscopy (STM)Electron spin resonance (ESR)Pump-probesingle atom magnetism To reference this document use: https://doi.org/10.4233/uuid:c3e888a9-cfaa-4d67-8ff2-74deebb6ee46 ISBN 978-94-6384-580-9 Part of collection Institutional Repository Document type doctoral thesis Rights © 2024 L.M. Veldman Files PDF PhD_Thesis_Lukas_Veldman.pdf 23.33 MB Close viewer /islandora/object/uuid:c3e888a9-cfaa-4d67-8ff2-74deebb6ee46/datastream/OBJ/view