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Matan, K.*; Helton, J. S.*; Grohol, D.*; Nocera, D. G.*; 脇本 秀一; 加倉井 和久; Lee, Y. S.*
Physica B; Condensed Matter, 404(17), p.2529 - 2531, 2009/09
被引用回数:3 パーセンタイル:16.82(Physics, Condensed Matter)Polarized neutron scattering studies of spin-wave excitations and spin fluctuations in the kagom lattice antiferromagnet KFe(OH)(SO) (jarosite) have been performed. Inelastic polarized neutron scattering measurements at 10 K on a single crystal sample reveal two spin gaps, associated with in-plane and out-of-plane excitations. The polarization analysis of quasi-elastic scattering at 67 K shows in-plane spin fluctuations with symmetry. Our results suggest that jarosite is an ideal candidate for studying the 2D universality class in magnetic systems.