Valence fluctuations in the 3D + 3 modulated Yb<sub>3</sub>Co<sub>4</sub>Ge<sub>13</sub> Remeika phase
Manuel Feig, Lev Akselrud, Mykhaylo Motylenko, Matej Bobnar, Jörg Wagler, Kristina O. Kvashnina, Volodymyr Levytskyi, David Rafaja, Andreas Leithe‐Jasper, Roman Gumeniuk
Abstract
= 8.74072(2) Å] Remeika prototype structure. The stoichiometric structurally modulated germanide is a metal with hole-like charge carriers, where Yb-ions are in a temperature-dependent intermediate valence state varying from +2.60 to +2.66 for the temperature range 85-293 K. The valence fluctuations have been investigated by means of temperature dependent X-ray absorption spectroscopy, magnetic susceptibility and thermopower measurements.
Topics & Concepts
Valence (chemistry)CrystallographyMaterials scienceCrystal structurePhase (matter)ChemistryOrganic chemistryRare-earth and actinide compoundsIron-based superconductors researchMagnetic Properties of Alloys