Quantum helimagnetism of the frustrated spin- chain

M. Enderle; C. Mukherjee; B. Fåk; R. K. Kremer; J.-M. Broto; H. Rosner; S.-L. Drechsler; J. Richter; J. Malek; A. Prokofiev; W. Assmus; S. Pujol; J.-L. Raggazzoni; H. Rakoto; M. Rheinstädter; H. M. Rønnow

doi:10.1209/epl/i2004-10484-x

All issues

Volume 70 / No 2 (April 2005)

Europhys. Lett., 70 2 (2005) 237-243

Abstract

Issue		Europhys. Lett. Volume 70, Number 2, April 2005


Page(s)		237 - 243
Section		Condensed matter: electronic structure, electrical, magnetic, and optical properties
DOI		https://doi.org/10.1209/epl/i2004-10484-x
Published online		18 March 2005

Europhys. Lett., 70 (2), pp. 237-243 (2005)

Quantum helimagnetism of the frustrated spin- $\frac{1}{2}$ chain $\chem{LiCuVO_4}$

M. Enderle¹, C. Mukherjee², B. Fåk³, R. K. Kremer⁴, J.-M. Broto⁵, H. Rosner⁶, S.-L. Drechsler⁷, J. Richter⁸, J. Malek⁷^,9, A. Prokofiev¹⁰, W. Assmus¹⁰, S. Pujol¹, J.-L. Raggazzoni¹, H. Rakoto⁵, M. Rheinstädter¹ and H. M. Rønnow¹¹

¹ 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

Received: 14 December 2004
Accepted: 25 February 2005

Abstract

Inelastic neutron scattering, susceptibility, and high-field magnetization identify $\chem{LiCuVO_4}$ 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

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