title: Hydrophobicity-Driven Self-Assembly of an Eighteen-Membered Honeycomb Lattice with Almost Classical Spins.
abstract: The design and synthesis of model compounds that do not exist naturally is one of the important targets in modern coordination chemistry. Herein, an eighteen-membered honeycomb structure with equal numbers of MnII(s=5/2) and GdIII(s=7/2) metal centers has been prepared, for the first time, by using a hydrophobic force-directed self-assembling process. Due to the weakly coupled GdIIIpairs, the magnetic properties are mainly determined by eight-membered chains in the experimentally considered temperature range. These [Mn4Gd4] "finite-size" chains, albeit with large Hilbert space, can be fully resolved by the high-temperature series expansion and the powerful finite-temperature Lanczos method, which reveal that the exchange-couplings between the metal centers are antiferromagnetic and consistent with the magnetization measurement. Interestingly, from the surface-engineering point of view, the [Mn4Gd4] chains are "precisely" assembled into a 2D honeycomb pattern, which is potentially desirable in the design of weakly coupled qubits.
authors.affiliation: Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials and MOE, Key Laboratory for Nonequilibrium Synthesis, Xi'an Jiaotong University., Xi'an, 710054, P. R. China.
authors.forename: Guo-Jun
authors.initials: GJ
authors.lastname: Zhou
authors.affiliation: Institut für Theoretische Physik, Otto-von-Guericke-Universität Magdeburg, PF 4120, 39016, Magdeburg, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Richter
authors.affiliation: Faculty of Physics, Bielefeld University, PO box 100131, 33501, Bielefeld, Germany. jschnack@uni-bielefeld.de.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Schnack
authors.affiliation: Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials and MOE, Key Laboratory for Nonequilibrium Synthesis, Xi'an Jiaotong University., Xi'an, 710054, P. R. China. zheng.yanzhen@xjtu.edu.cn.
authors.forename: Yan-Zhen
authors.initials: YZ
authors.lastname: Zheng
keywords: classical spins; eighteen-membered lattice; honeycomb lattice; self assembly; two-dimensional