1. Magnetization Process of Atacamite A Case of Weakly Coupled S 1 2 Sawtooth Chains
- Author
-
Heinze, L., Jeschke, H.O., Mazin, I.I., Metavitsiadis, A., Reehuis, M., Feyerherm, R., Hoffmann, J.U., Bartkowiak, M., Prokhnenko, O., Wolter, A.U.B., Ding, X., Zapf, V.S., Corval n Moya, C., Weickert, F., Jaime, M., Rule, K.C., Menzel, D., Valent , R., Brenig, W., and Süllow, S.
- Subjects
neutron diffraction ,magnetic structure - Abstract
We present a combined experimental and theoretical study of the mineral atacamite Cu2Cl OH 3. Density functional theory yields a Hamiltonian describing anisotropic sawtooth chains with weak 3D connections. Experimentally, we fully characterize the antiferromagnetically ordered state. Magnetic order shows a complex evolution with the magnetic field, while, starting at 31.5 T, we observe a plateaulike magnetization at about Msat 2. Based on complementary theoretical approaches, we show that the latter is unrelated to the known magnetization plateau of a sawtooth chain. Instead, we provide evidence that the magnetization process in atacamite is a field driven canting of a 3D network of weakly coupled sawtooth chains that form giant moments
- Published
- 2021