Dresden 2017 – scientific programme
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MA: Fachverband Magnetismus
MA 35: Magnetic Particles / Clusters
MA 35.10: Talk
Wednesday, March 22, 2017, 11:45–12:00, HSZ 101
Electronic theory of multicenter complexes as logic elements — •Dibyajyoti Dutta1, Debapriya Chaudhuri1,2, Georgios Lefkidis1, and Wolfgang Hübner1 — 1University of Kaiserslautern and Research Center OPTIMAS, Kaiserslautern, Germany — 2SPINTEC CEA, Grenoble, France
We present a first-principles study of ultrafast spin dynamics on small magnetic Ni/Co clusters. The cooperative effects, due to the electronic correlations and the abundance of d electrons, allow the coherent spin manipulation controlled with femtosecond laser pulses [1]. Using already established spin flip and transfer scenarios, one can construct magnetic logic gates.
Previously, we reported results on the synthesis, characterization and suggested laser-induced spin dynamics on ligand-decorated Co3 and Ni3 structures [2,3]. Here we extend our study to the [Co3Ni]+EtOH complex. A high-level ab initio calculation suggests a pyramidal structure of the [Co3Ni] part, in agreement with the spectroscopic data. Our findings suggest that optical spin manipulation in magnetic molecules can be used for future nanospintronic devices.
[1] W. Jin, F. Rupp, K. Chevalier, M. M. N. Wolf, M. Colindres-Rojas, G. Lefkidis, H.-J. Krüger, R. Diller, and W. Hübner, Phys. Rev. Lett. 109, 267209 (2012)
[2] W. Jin, C. Li, G. Lefkidis, W. Hübner, Phys. Rev. B 89, 024419 (2014)
[3] D. Chaudhuri, W. Jin, G. Lefkidis, and W. Hübner, J. Chem. Phys. 143, 174303 (2015)