Diamond lattice Heisenberg antiferromagnet. (16th March 2018)

• Record Type: Journal Article
• Authors: Oitmaa, J
• Is Part Of: Journal of physics. Volume 30:Number 15(2018)
• Publication Date: 2018-03-16
• Subjects: Heisenberg model -- magnetism -- series expansions; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aab22c
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We investigate ground-state and high-temperature properties of the nearest-neighbour Heisenberg antiferromagnet on the three-dimensional diamond lattice, using series expansion methods. The ground-state energy and magnetization, as well as the magnon spectrum, are calculated and found to be in good agreement with first-order spin-wave theory, with a quantum renormalization factor of about 1.13. High-temperature series are derived for the free energy, and physical and staggered susceptibilities for spin S = 1/2, 1 and 3/2, and analysed to obtain the corresponding Curie and Néel temperatures.