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Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4.

Lancaster, T. and Giblin, S.R. and Allodi, G . and Bordignon, S. and Mazzani, M. and De Renzi, R. and Freeman, P.G. and Baker, P.J. and Pratt, F.L. and Babkevich, P. and Blundell, S.J. and Boothroyd, A.T. and Möller, J.S. and Prabhakaran, D. (2014) 'Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4.', Physical review B., 89 (2). 020405(R).


We investigate the magnetic ordering and dynamics of the stripe phase of La 5/3 Sr 1/3 CoO 4 , a material shown to have an hourglass magnetic excitation spectrum. A combination of muon-spin relaxation, nuclear magnetic resonance, and magnetic susceptibility measurements strongly suggest that the physics is determined by a partially disordered configuration of charge and spin stripes whose frustrated magnetic degrees of freedom are dynamic at high temperature and which undergo an ordering transition around 35 K with coexisting dynamics that freeze out in a glassy manner as the temperature is further reduced.

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Publisher statement:Reprinted with permission from the American Physical Society: T. Lancaster, S. R. Giblin, G. Allodi, S. Bordignon, M. Mazzani, R. De Renzi, P. G. Freeman, P. J. Baker, F. L. Pratt, P. Babkevich, S. J. Blundell, A. T. Boothroyd, J. S. Möller, and D. Prabhakaran, Physical Review B, 89, 020405(R), 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:18 December 2013
Date deposited:13 May 2014
Date of first online publication:15 January 2014
Date first made open access:No date available

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