Charge, lattice and magnetism across the valence crossover in EuIr<sub>2</sub>Si<sub>2</sub> single crystals
Charge, lattice and magnetism across the valence crossover in EuIr<sub>2</sub>Si<sub>2</sub> single crystals
We present a detailed study of the temperature evolution of the crystal structure, specific heat, magnetic susceptibility and resistivity of single crystals of the paradigmatic valence-fluctuating compound [Formula: see text]. A comparison to stable-valent isostructural compounds [Formula: see text] (with Eu3+), and [Formula: see text], (with Eu2+) reveals an anomalously …