title: Magnetic and thermal responses triggered by structural changes in the double perovskite Sr2YRuO6.
abstract: Among double perovskites, the interpretation of the magnetic, thermal and transport properties of Sr(2)YRuO(6) remains a challenge. Characterization using different techniques reveals a variety of features that are not understood, described as anomalous, and yields contradictory values for several relevant parameters. We solved this situation through detailed susceptibility, specific heat, thermal expansion and x-ray diffraction measurements, including a quantitative correlation of the parameters characterizing the so-called anomalies. The emergence of short-range magnetic correlations, surviving well above the long-range transition, naturally accounts for the observed unconventional behavior of this compound. High resolution x-ray powder diffraction and thermal expansion results conclusively show that the magnetic and thermal responses are driven by lattice changes, providing a comprehensive scenario in which the interplay between the spin and structural degrees of freedom plays a relevant role.
authors.affiliation: Instituto de Física, Universidade Federal do Rio de Janeiro, Cidade Universitária, Rio de Janeiro, Brazil.
authors.forename: P L
authors.initials: PL
authors.lastname: Bernardo
authors.forename: L
authors.initials: L
authors.lastname: Ghivelder
authors.forename: G G
authors.initials: GG
authors.lastname: Eslava
authors.forename: H S
authors.initials: HS
authors.lastname: Amorim
authors.forename: E H C
authors.initials: EH
authors.lastname: Sinnecker
authors.forename: I
authors.initials: I
authors.lastname: Felner
authors.forename: J J
authors.initials: JJ
authors.lastname: Neumeier
authors.forename: S
authors.initials: S
authors.lastname: García