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MA: Fachverband Magnetismus

MA 15: Spintronics and Magnetic Semiconductors (jointly with HL)

MA 15.1: Vortrag

Dienstag, 12. März 2013, 09:30–09:45, H3

Low versus high energy excitations in the Skyrmion lattice system Cu₂OSeO₃ — •Dirk Wulferding¹, Peter Lemmens¹, Vladimir Gnezdilov², Yurii Pashkevich³, Christian Pfleiderer⁴, and Helmuth Berger⁵ — ¹IPKM, TU-BS, Braunschweig — ²ILTPE, Kharkov, Ukraine — ³DonFTI, Donetsk, Ukraine — ⁴Physikdepartment, TU München — ⁵EPFL, Lausanne, Switzerland

Cu₂OSeO₃, a ferromagnetic insulator with a skyrmion lattice phase previously known from intermetallics, shows low as well as high energy excitations that strongly depend on small applied magnetic fields. In particular, the low energy anomalies are discussed in relation to the Skyrmion lattice. Work supported by DFG, B-IGSM and NTH School for Contacts in Nanosystems.