Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 17: Correlated Electrons: Quantum-Critical Phenomena 1
TT 17.4: Vortrag
Dienstag, 24. März 2009, 14:45–15:00, HSZ 03
Pressure Dependence of the Magnetization and Magnetotransport in Ferromagnetic Pr5Si3 — Christian Franz1, •Stefan Legl1, Christian Pfleiderer1, Philipp Niklowitz1, Dmitri Souptel2, and Günther Behr2 — 1Physik Department E21, Technische Universität München, D-85748 Garching, Germany — 2Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, PF270116, 01171 Dresden, Germany
Pr5Si3 is an easy-plane ferromagnet with a comparatively low Curie temperature. We report the pressure dependence of the magnetization under pressures up to 18 kbar at magnetic fields up to 9 T. We have further measured the magnetotransport properties under pressure up to 60 kbar and magnetic field up to 14 T using a Bridgman pressure cell. Anomalous contributions to the Hall signal allow us to track the magnetic state up to the highest pressures studied. Our data suggest that the magnetic state of Pr5Si3 fairly abruptly develops an additional modulation for pressure in excess of ∼25 kbar, thus avoiding ferromagnetic quantum criticality.