Dresden 2020 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 10: Multiferroics and Magnetoelectric Coupling II (joint session MA/KFM)

KFM 10.6: Talk

Wednesday, March 18, 2020, 16:15–16:30, HSZ 401

Magnetoelectricity in Itinerant-Electron Paramagnets, Ferromagnets and Antiferromagnets — •Roland Winkler^1,2,3 and Ulrich Zülicke^4,2 — ¹Physics, Northern Illinois University, USA — ²Materials Science Division, Argonne National Laboratory, USA — ³Materials Science and Engineering, University of Illinois at Urbana-Champaign, USA — ⁴School of Chemical and Physical Sciences and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand

We present a detailed theory for magnetoelectricity in itinerant-electron paramagnets, ferromagnets and antiferromagnets, whereby an electric field can induce a magnetization and a magnetic field can induce a polarization. Accurate numerical calculations are complementd by analytical models that provide a detailed microscopic understanding of magnetoelectricity in itinerant-electron systems. Our realistic calculations suggest that an electrically induced magnetization can be as large as one Bohr magneton per charge carrier.

This work was supported by the NSF under Grant No. DMR-1310199. Research at UIUC was supported by the Illinois MRSEC, NSF Grant No. DMR-1720633. Work at Argonne was supported by DOE BES under Contract No. DE-AC02-06CH11357.