title: Dzyaloshinsky-Moriya anisotropy in the spin-1/2 kagome compound ZnCu3(OH)6Cl2.
abstract: We report the determination of the Dzyaloshinsky-Moriya interaction, the dominant magnetic anisotropy term in the kagome spin-1/2 compound ZnCu3(OH)6Cl2. Based on the analysis of the high-temperature electron spin resonance (ESR) spectra, we find its main component |Dz|=15(1) K to be perpendicular to the kagome planes. Through the temperature dependent ESR linewidth, we observe a building up of nearest-neighbor spin-spin correlations below approximately 150 K.
authors.affiliation: Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris-Sud 11, 91405 Orsay, France.
authors.forename: A
authors.initials: A
authors.lastname: Zorko
authors.forename: S
authors.initials: S
authors.lastname: Nellutla
authors.forename: J
authors.initials: J
authors.lastname: van Tol
authors.forename: L C
authors.initials: LC
authors.lastname: Brunel
authors.forename: F
authors.initials: F
authors.lastname: Bert
authors.forename: F
authors.initials: F
authors.lastname: Duc
authors.forename: J-C
authors.initials: JC
authors.lastname: Trombe
authors.forename: M A
authors.initials: MA
authors.lastname: de Vries
authors.forename: A
authors.initials: A
authors.lastname: Harrison
authors.forename: P
authors.initials: P
authors.lastname: Mendels