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Local magnetism and spin correlations in the geometrically frustrated cluster magnet LiZn2Mo3O8.

Sheckelton, J.P. and Foronda, F.R. and Pan, L.D. and Moir, C. and McDonald, R.D. and Lancaster, T. and Baker, P.J. and Armitage, N.P. and Imai, T. and Blundell, S.J. and McQueen, T.M. (2014) 'Local magnetism and spin correlations in the geometrically frustrated cluster magnet LiZn2Mo3O8.', Physical review B., 89 (6). 064407.


LiZn2Mo3O8 has been proposed to contain S=½Mo3O13 magnetic clusters arranged on a triangular lattice with antiferromagnetic nearest-neighbor interactions. Here, microwave and terahertz electron spin resonance, Li7 nuclear magnetic resonance, and muon spin rotation spectroscopies are used to characterize the local magnetic properties of LiZn2Mo3O8. These results show the magnetism in LiZn2Mo3O8 arises from a single isotropic S=½electron per cluster and that there is no static long-range magnetic ordering down to T = 0.07 K. Further, there is evidence of gapless spin excitations with spin fluctuations slowing down as the temperature is lowered. These data indicate strong spin correlations, which, together with previous data, suggest a low-temperature resonating valence-bond state in LiZn2Mo3O8.

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Publisher statement:Reprinted with permission from the American Physical Society: J. P. Sheckelton, F. R. Foronda, LiDong Pan, C. Moir, R. D. McDonald, T. Lancaster, P. J. Baker, N. P. Armitage, T. Imai, S. J. Blundell, and T. M. McQueen, Physical Review B, 89, 064407, 2014. © 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:22 January 2014
Date deposited:13 May 2014
Date of first online publication:11 February 2014
Date first made open access:No date available

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