Disorder from Order Among Anisotropic Next-Nearest-Neighbor Ising Spin Chains in SrHo2O4

Published

February 26, 2015

Author(s)

J.-J. Wen, W. Tian, V. O. Garlea, S. M. Koohpayeh, T. M. McQueen, H.-F. Li, J.-Q. Yan, Jose Rodriguez Rivera, D. Vaknin, Collin L. Broholm

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 (arrow up, arrow down, arrow up, arrow down) and double Neel (arrow up, arrow up, arrow down, arrow down) 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.

Citation

Physical Review B

Volume

91

Issue

5

Pub Type

Journals

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Keywords

Neutron Scattering, Magnetic Materials

Citation

Wen, J. , Tian, W. , Garlea, V. , Koohpayeh, S. , McQueen, T. , Li, H. , Yan, J. , Rodriguez Rivera, J. , Vaknin, D. and Broholm, C. (2015), Disorder from Order Among Anisotropic Next-Nearest-Neighbor Ising Spin Chains in SrHo₂O₄, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918137 (Accessed December 13, 2024)