Special seminars TRR80

25.10.2017 4 p.m., room: R-242
Dr. Peter Milde (TU Dresden, Institute of Applied Physics, Dresden)
Scanning Force Microscopy Investigations of Skyrmions
26.10.2017 2 p.m., room: S-254
Prof. Dr. Vasily Moshnyaga (Georg-August-Universität Göttingen, Germany)
Order / disorder phenomena in perovskite films
14.11.2017 4 p.m., room: S-288
Dr. Martin Hohenadler (Universität Würzburg)
Competing Orders in Luttinger and Dirac Liquids
15.11.2017 3:30 p.m., room: S-403
Dr. Dirk Wulferding (Institute for Condensed Matter Physics, TU Braunschweig and Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, POSTECH, Korea)
Magnetic force microscopy beyond imaging - from low energy condensed matter physics to high energy particle physics
28.11.2017 5 p.m., room: S-288
Prof. Dr. Björn Trauzettel (Universität Würzburg)
Chiral anomaly and fractional charges at the quantum spin Hall edge
30.11.2017 1:30 p.m., room: S-403
Dr. Leonid E. Svistov (P.L. Kapitza Institute for Physical Problems of Russian Academy of Sciences, Moscow)
Exotic phases in the triangular antiferromagnet CuCrO2
4.12.2017 12:15 p.m., room: S-439
Dr. Ivan Rungger (National Physics Laboratory, Teddington/London)
Beyond semi-local DFT corrections for nanoscale materials and device modelling
11.12.2017 3:45 p.m., room: S-288
Prof. Avinash Mahajan (Indian Institute of Technology Bombay, Mumbai)
Gapless spin liquid behaviour in the S = 1 honeycomb ruthenate Ag3LiRu2O6
23.1.2018 4 p.m., room: S-288
Dr. Achilleas Lazarides (Max-Planck-Institut für die Physik komplexer Systeme, Dresden)
Floquet many-body physics: Ensembles and order away from equilibrium
26.1.2018 10 a.m., room: S-403
Dr. Dávid Szaller (Institut für Festkörperphysik, TU Wien)
Exotic magnetoelectric excitations of the multiferroic SmFe3(BO3)4

Magnetoelectric (ME) multiferroics (MFs), i.e. materials simultaneously hosting ferroelectric and magnetic order, have been attracting enormous interest due to their potential in information-technology applications.I,II Rare-earth ferroborates are a particularly interesting family of MF crystals, where the strong spin-orbit interaction at the rare-earth sites results in the coupling of the magnetic and electric degrees of freedom. The ME response of the material is enhanced by the antiferromagnetic ordering of the iron spins.III The same ME coupling appears in the optical regime as different absorption of counter-propagating light beams, where transparent and dark directions can be swapped by reversing the magnetic field.IV Furthermore, due to the ME coupling the strength of absorption at spin-wave resonance frequencies can also be tuned by electric field, opening the path for practical applications.V

I L. W. Martin, Y.-H. Chuc and R. Ramesh, Mater. Sci. Eng. R 68, 89 (2010)

II S. M. Wu, Shane A. Cybart, D. Yi, James M. Parker, R. Ramesh and R. C. Dynes, Phys. Rev. Lett. 110, 067202 (2013)

III A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, A. P. Pyatakov, S. S. Krotov, K. I. Kamilov, V. Yu. Ivanov, A. A. Mukhin, A. K. Zvezdin, A. M. Kuz’menko, L. N.Bezmaternykh, I. A. Gudim and V. L. Temerov, Low Temp. Phys., 36 511–521 (2010)

IV I. Kézsmárki, D. Szaller, S. Bordács, V. Kocsis, Y. Tokunaga, Y. Taguchi, H. Murakawa, Y. Tokura, H. Engelkamp, T. Rõõm and U. Nagel, Nat. Commun. 5, 3203 (2014)

V A. M. Kuz’menko, D. Szaller, Th. Kain, V. Dziom, L. Weymann, A. Shuvaev, Anna Pimenov, A. A. Mukhin, V. Yu. Ivanov, I. A. Gudim, L. N. Bezmaternykh and A. Pimenov, Phys. Rev. Lett. 120, 027203 (2018)

30.1.2018 4 p.m., room: S-288
Dr. Andrés Cano (CNRS, Université Grenoble Alpes, Institut Néel, Grenoble and Department of Materials, ETH Zurich)
FeSi: A new building block for iron-based superconductivity
27.2.2018 2 p.m., room: S-288
Prof. Dr. Shuichi Murakami (Tokyo Institute of Technology)
Topological phases in condensed matter