University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Colloquium

Monday, September 24th 2018
Speaker: Natalia Perkins, University of Minnesota
Subject: The pursuit of Majorana fermions in Kitaev materials
Refreshments in atrium after the Colloquium.

The 1937 theoretical discovery of Majorana fermions has since impacted diverse problems ranging from neutrino physics and dark matter searches to fractional quantum Hall effect, superconductivity and quantum spin liquids (QSLs). In my talk I will focus on the hunting for Majorana fermions in Kitaev materials, which believe to harbor a variety of QSLs. These Kitaev QSLs exhibit two types of fractionalized quasiparticle excitations - itinerant Majorana fermions and gapped Z2 fluxes. In recent years, a remarkable theoretical and experimental progress has been achieved in understanding that these fractionalized quasiparticles and, in particular, Majorana fermions can be effectively probed by conventional spectroscopic techniques such as inelastic neutron scattering, Raman scattering with visible light, and resonant inelastic X-ray scattering.

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