title: On the anisotropy of the magnetic properties of CsYbZnSe3.
abstract: DC magnetic susceptibility measurements on CsYbZnSe 3 show a broad magnetic transition at approximately 10 K and pronounced differences between zero-field-cooled and field-cooled data that lead to experimental effective magnetic moments of 4.26(5) BM and 4.39(4) BM, respectively. Specific heat measurements confirm that there is neither long-range ordering nor a phase transition between 1.8 and 380 K. First-principles electronic structure calculations with and without inclusion of spin-orbit coupling effects show that the spins of CsYbZnSe 3 prefer to orient along [010] rather than along either [100] or [001] of this orthorhombic material and that the spin exchange between adjacent Yb3+ ions along [100] is substantially antiferromagnetic. The magnetic properties of CsYbZnSe 3 are best described by an Ising uniform antiferromagnetic chain model.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
authors.forename: George H
authors.initials: GH
authors.lastname: Chan
authors.forename: Changhoon
authors.initials: C
authors.lastname: Lee
authors.forename: Dadi
authors.initials: D
authors.lastname: Dai
authors.forename: Myung-Hwan
authors.initials: MH
authors.lastname: Whangbo
authors.forename: James A
authors.initials: JA
authors.lastname: Ibers