Volume 70, Number 2, April 2005
|Page(s)||237 - 243|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||18 March 2005|
Quantum helimagnetism of the frustrated spin- chain
Institut Laue-Langevin - BP 156, 38042 Grenoble Cédex 9, France
2 Clarendon Laboratory - Parks Road, Oxford, OX1 3PU, UK
3 DRFMC/SPSMS, CEA - 38054 Grenoble, France
4 Max-Planck Institute for Solid State Research - 70569 Stuttgart, Germany
5 Laboratoire National des Champs Magnétiques Pulsés - 31432 Toulouse, France
6 Max-Planck Institute for Chemical Physics of Solids - 01187 Dresden, Germany
7 Institut für Festkörpertheorie im IFW Dresden - Dresden, Germany
8 Theoretische Physik, Universität Magdeburg - Magdeburg, Germany
9 Institute of Physics, ASCR - Prague, Czech Republic
10 Johann Wolfgang von Goethe Universität - Postfach 111932, 60054 Frankfurt, Germany
11 Paul-Scherrer-Institut - 5232 Villigen PSI, Switzerland
Accepted: 25 February 2005
Inelastic neutron scattering, susceptibility, and high-field magnetization identify as a nearest-neighbour ferromagnetic, next-nearest-neighbour frustrated, quasi–one-dimensional helimagnet, which is largely influenced by quantum fluctuations. Complementary band structure calculations provide a microscopic model with the correct sign and magnitude of the major exchange integrals.
PACS: 75.10.Jm – Quantized spin models / 75.30.-m – Intrinsic properties of magnetically ordered materials / 71.20.-b – Electron density of states and band structure of crystalline solids
© EDP Sciences, 2005
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