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Woo N, Silevitch DM, Ferri C, et al. Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet. J Phys Condens Matter. 2015;27(29):296001doi: 10.1088/0953-8984/27/29/296001.
Woo, N., Silevitch, D. M., Ferri, C., Ghosh, S., & Rosenbaum, T. F. (2015). Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet. Journal of physics. Condensed matter : an Institute of Physics journal, 27(29), 296001. https://doi.org/10.1088/0953-8984/27/29/296001
Woo, N, et al. "Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet." Journal of physics. Condensed matter : an Institute of Physics journal vol. 27,29 (2015): 296001. doi: https://doi.org/10.1088/0953-8984/27/29/296001
Woo N, Silevitch DM, Ferri C, Ghosh S, Rosenbaum TF. Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet. J Phys Condens Matter. 2015 Jul 29;27(29):296001. doi: 10.1088/0953-8984/27/29/296001. Epub 2015 Jul 08. PMID: 26154501.
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J Phys Condens Matter. 2015 Jul 29;27(29):296001. doi: 10.1088/0953-8984/27/29/296001. Epub 2015 Jul 08.

Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet.

Journal of physics. Condensed matter : an Institute of Physics journal

N Woo, D M Silevitch, C Ferri, S Ghosh, T F Rosenbaum

Affiliations

  1. The James Franck Institute and Department of Physics, The University of Chicago, Chicago, IL 60637, USA.

PMID: 26154501 DOI: 10.1088/0953-8984/27/29/296001

Abstract

The geometrically frustrated triangular antiferromagnet Gadolinium Gallium Garnet (Gd3Ga5O12 or GGG) exhibits a rich mix of short-range order and isolated quantum states. We investigate the effects of up to 1% neodymium substitution for gallium on the ac magnetic response at temperatures below 1 K in both the linear and nonlinear regimes. Substitutional disorder actually drives the system toward a more perfectly frustrated state, apparently compensating for the effects of imperfect gadolinium/gallium stoichiometry, while at the same time more closely demarcating the boundaries of isolated, coherent clusters composed of hundreds of spins. Optical measurements of the local Nd environment substantiate the picture of an increased frustration index with doping.

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