Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 17: Poster Session I
MA 17.47: Poster
Dienstag, 8. März 2016, 09:30–12:30, Poster B1
Free-Standing Thin Films of Magnetic Intercalated Dichalcogenides studied by XMCD and ultrafast TEM — •Thomas Danz1, Qi Liu2, Ra’anan I. Tobey2, Sascha Schäfer1, and Claus Ropers1 — 14th Physical Institute, University of Göttingen, Germany — 2Zernike Institute for Advanced Materials, University of Groningen, The Netherlands
Transition metal dichalcogenides (TMDCs) represent a broad class of layered materials with a variety of intrinsic structural and electronic properties. These properties can be further diversified by intercalation of atoms and small molecules between the loosely bound layers. In particular, the intercalation of 3d transition metals results in an array of magnetic properties. Therefore, 3d intercalated TMDCs provide a platform to study magnetic, structural, and electronic dynamics with tunability by concentration, intercalated species, and host lattice [1]. Here, we present a sample preparation technique providing large area, free-standing films of 3d intercalated TMDCs down to a thickness of 30 nm. The properties of the initial bulk samples are largely retained, as evidenced by static TEM diffraction and XMCD measurements [2]. Furthermore, first results of optical pump/electron probe measurements on the ultrafast sample dynamics in the Göttingen Ultrafast Transmission Electron Microscope (UTEM) [3] will be presented.
[1] W. Y. Liang, in: Intercalation in Layered Materials, M. S. Dresselhaus (Ed.), Springer, pp. 31–73 (1986).
[2] Th. Danz et al., in preparation.
[3] A. Feist et al., Nature 521, 200 (2015).