Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 3: Correlated Electrons: Heavy Fermions
TT 3.7: Vortrag
Montag, 26. März 2012, 11:00–11:15, H 3005
Shubnikov-de Haas Oscillations in LuRh2Si2 — •Sven Friedemann1, Swee K Goh1, F Malte Grosche1, Zachary Fisk2, Michael Sutherland1, Patrick Rourke3, and Gertrud Zwicknagl4 — 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 — 3H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK — 4Institute for Mathematical Physics, TU Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig, Germany
We present measurements of the Shubnikov-de Haas effect on LuRh2Si2 in conjunction with electronic band structure calculations. These electronic structure investigations can help understand the peculiar temperature dependence of the Hall effect. In addition, LuRh2Si2 represents the non-magnetic reference compound to YbRh2Si2, a prototypical heavy-fermion system featuring an unconventional quantum critical point. In YbRh2Si2, an orbitally selective Mott transition occurs from a large Fermi surface configuration including f electrons to a small configuration with conduction electrons only. LuRh2Si2 resembles the small Fermi surface configuration of YbRh2Si2. We detect oscillations of the resistivity with a large number of frequencies and discuss the angular dependency. We compare the detected orbits with those predicted for the three sheets by band structure calculations and discuss implications for the interpretation of quantum oscillation measurements on YbRh2Si2.