Regensburg 2013 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 53: Correlated Electrons: Heavy Fermions
TT 53.7: Talk
Thursday, March 14, 2013, 11:00–11:15, H19
Electronic Structure of LuRh2Si2 - reference to YbRh2Si2 — •Pascal Reiss1, Swee K. Goh1, F. Malte Grosche1, Zachary Fisk2, Michael Sutherland1, Patrick M.C. Rourke3, Gertrud Zwicknagl4, and Sven Friedemann1 — 1Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB3 0HE Cambridge, United Kingdom — 2Department of Physics and Astronomy, University of California, Irvine, CA 92697-4575, USA — 3National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6, Canada — 4Institute for Mathematical Physics, TU Braunschweig, Mendelssohnstraße 3, 38106 Braunschweig, Germany
The intermetallic compound LuRh2Si2 is of interest as a non-magnetic reference compound to the heavy fermion material YbRh2Si2. YbRh2Si2 features an intensively studied quantum critical point (QCP) when small magnetic fields suppress the Neel temperature to zero. Signatures in transport and thermodynamic properties suggest a reconstruction of the Fermi Surface from a small configuration with localised f-electrons in the antiferromagnetic phase to a large configuration with itinerant f-electrons in the paramagnetic phase. Hence isostructural LuRh2Si2 with its completely filled f-shell and identical lattice parameters is a perfect reference compound for the small Fermi surface configuration. Here we present band structure calculations of LuRh2Si2 and compare predicted and observed Shubnikov-de Haas frequencies under different angles in dependence of the relative z/c position of the Si atoms.