title: The first {Dy4} single-molecule magnet with a toroidal magnetic moment in the ground state.
abstract: A toroidal magnetic moment in the absence of a conventional total magnetic moment was first observed in a novel tetranuclear dysprosium cluster with nonmagnetic ground state. The toroidal state is quite robust with respect to variations of the exchange parameters.
authors.affiliation: MOE Key Lab of Bioinorganic and Synthetic Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
authors.forename: Peng-Hu
authors.initials: PH
authors.lastname: Guo
authors.forename: Jun-Liang
authors.initials: JL
authors.lastname: Liu
authors.forename: Ze-Min
authors.initials: ZM
authors.lastname: Zhang
authors.forename: Liviu
authors.initials: L
authors.lastname: Ungur
authors.forename: Liviu F
authors.initials: LF
authors.lastname: Chibotaru
authors.forename: Ji-Dong
authors.initials: JD
authors.lastname: Leng
authors.forename: Fu-Sheng
authors.initials: FS
authors.lastname: Guo
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Tong