Calendar of Physics Talks Vienna

Terahertz spectroscopy as a complimentary tool to neutron scattering in the study of magnetic materials
Speaker:Dr. Evan Constable (CNRS, Grenoble)
Abstract:When studying magnetic materials, neutron spectroscopy is typically the method of choice. However, the lack of charge sensitivity in neutrons can impede the study of exotic polar modes that emerge in novel magneto-electric crystals. Here, the electromagnetic nature of the photon becomes an attractive means to probe this new physics making terahertz spectroscopy to a complementary tool in studying exotic magnetic materials. In this talk I will present a number of recent investigations where terahertz spectroscopy has been complementary to neutron scattering studies. Specifically, I will discuss the quantitative measurement of a dynamic anisotropy in a canted antiferromagnet NdFeO3, the structural phase transition and novel magnetic excitations in a new multiferroic Cu3Bi(SeO3)2O2Cl, and a double vibrionic process in the quantum spin-ice candidate Tb2Ti2O7.
Date: Wed, 24.08.2016
Time: 11:00
Duration: 45 min
Location:Seminarraum DC rot 07 (Freihaus, roter Bereich, 7. OG), Wiedner Hauptstra├če 8-10, 1040 Wien
Contact:Andrei Pimenov