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Ground-state properties of the triangular-lattice Heisenberg antiferromagnet with arbitrary spin quantum number s

Goetze, Oliver, Richter, Johannes, Zinke, Ronald and Farnell, Damian 2016. Ground-state properties of the triangular-lattice Heisenberg antiferromagnet with arbitrary spin quantum number s. Journal of Magnetism and Magnetic Materials 397 , pp. 333-341. 10.1016/j.jmmm.2015.08.113

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Abstract

We apply the coupled cluster method to high orders of approximation and exact diagonalizations to study the ground-state properties of the triangular-lattice spin-s Heisenberg antiferromagnet. We calculate the fundamental ground-state quantities, namely, the energy e0, the sublattice magnetization Msub, the in-plane spin stiffness ρs and the in-plane magnetic susceptibility χ for spin quantum numbers s=1/2,1,…,smax, where smax=9/2 for e0 and Msub, smax=4 for ρs and smax=3 for χ . We use the data for s≥3/2 to estimate the leading quantum corrections to the classical values of e0, Msub, ρs, and χ. In addition, we study the magnetization process, the width of the 1/3 plateau as well as the sublattice magnetizations in the plateau state as a function of the spin quantum number s.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Dentistry
Subjects: R Medicine > RK Dentistry
Uncontrolled Keywords: Triangular lattice; Heisenberg antiferromagnet; Ground-state properties; Magnetization curves
Publisher: Elsevier
ISSN: 0304-8853
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 24 August 2015
Last Modified: 01 Jul 2019 17:01
URI: http://orca.cf.ac.uk/id/eprint/76004

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