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Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHo2O4

TitleDisorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHo2O4
Publication TypeJournal Article
Year of Publication2015
AuthorsWen, JJ, Tian, W, Garlea, VO, Koohpayeh, SM, McQueen, TM, Li, HF, Yan, JQ, Rodriguez-Rivera, JA, Vaknin, D, Broholm, CL
JournalPhysical Review B
Volume91
Pagination054424
Date Published02
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000350207200005
Keywordsfrustrated magnet, lattice
Abstract

We describe why Ising spin chains with competing interactions in SrHo2O4 segregate into ordered and disordered ensembles at low temperatures (T). Using elastic neutron scattering, magnetization, and specific heat measurements, the two distinct spin chains are inferred to have Neel (up arrow down arrow up arrow down arrow) and double-Neel (up arrow up arrow down arrow down arrow) ground states, respectively. Below T-N = 0.68(2) K, the Neel chains develop three-dimensional long range order (LRO), which arrests further thermal equilibration of the double-Neel chains so they remain in a disordered incommensurate state for T below T-S = 0.52(2) K. SrHo2O4 distills an important feature of incommensurate low dimensional magnetism: kinetically trapped topological defects in a quasi-d-dimensional spin system can preclude order in d + 1 dimensions.

DOI10.1103/PhysRevB.91.054424
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Nanoscale and Ultrafast