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MA: Fachverband Magnetismus
MA 42: Magnetic Materials III
MA 42.2: Talk
Thursday, April 3, 2014, 15:15–15:30, HSZ 04
Quantum oscillations and high carrier mobility in the delafossites PdCoO2 and PdCrO2 — •Clifford Hicks1,2, Alexandra Gibbs1, Andrew Mackenzie1,2, Hiroshi Takatsu3,4, Yoshiteru Maeno4, and Edward Yelland1 — 1University of St Andrews, St Andrews, United Kingdom — 2Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 3Tokyo Metropolitan University, Tokyo, Japan — 4Kyoto University, Kyoto, Japan
We present torque magnetometry and resistivity data on single crystals of the delafossites PdCoO2 and PdCrO2. At 295 K we measure an in-plane resistivity of 2.6 µ Ω-cm in PdCoO2, making it the most conductive oxide known. PdCrO2 has the same crystal structure as PdCoO2, but is a triangular antiferromagnetic metal. Apart from the addition of the magnetism, the electronic structure of PdCrO2 is strikingly similar to that of PdCoO2, and comparison of these two metals provides an opportunity to isolate the effects of the magnetism.