Dresden 2026 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 19: Poster Session
MM 19.43: Poster
Tuesday, March 10, 2026, 18:00–20:00, P5
Correlated-electron metallic systems at extremely high temperature — •Zuzanna Helena Filipiak1,2 and Andrew P. Mackenzie1,2 — 1Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 2School of Physics and Astronomy, University of St Andrews, Scotland, UK
Although the low-temperature regime is the most established experimental phase space to study correlated-electron systems, a unique physical insight can be won from study at much higher temperatures as well. In particular, the unresolved mystery of the Planckian dissipation - with its linear-in-temperature electrical resistivity sometimes persisting over a few orders of magnitude in temperature with an unchanged slope - is worth studying across wide ranges of temperature. We have developed two setups in which resistivity of a metallic sample is measured as a function of temperature (ranging from 2 to 1000 K), magnetic field (up to 14 T) and the chemical reactivity of the exchange gas (oxygen, argon, vacuum). In this contribution we report on our current understanding of the observed presence and lack of resistivity saturation in different compounds from the groups of the weakly-interacting delafossites (PdCrO2 and PdCoO2) and the more strongly-interacting ruthenates (Sr2RuO4, Sr3Ru2O7 and Ca3Ru2O7).
Keywords: resistivity; correlated electrons; Planckian dissipation; transition metal oxides