We investigate the magnetic ordering and dynamics of the stripe phase of La5/3Sr1/3CoO4, 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.
Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4 / T., Lancaster; S. R., Giblin; Allodi, Giuseppe; Bordignon, Sara; Mazzani, Marcello; DE RENZI, Roberto; P. G., Freeman; P. J., Baker; F. L., Pratt; P., Babkevich; S. J., Blundell; A. T., Boothroyd; J. S., Moeller; D., Prabhakaran. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 89:(2014), pp. 020405(R)-1-020405(R)-6. [10.1103/PhysRevB.89.020405]
Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4
ALLODI, Giuseppe;BORDIGNON, Sara;MAZZANI, Marcello;DE RENZI, Roberto;
2014-01-01
Abstract
We investigate the magnetic ordering and dynamics of the stripe phase of La5/3Sr1/3CoO4, 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.| File | Dimensione | Formato | |
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