Investigation of quantum and thermal fluctuations ferromagnetic spin chains with easy-plane anisotropy. (28th May 2019)

• Record Type: Journal Article
• Authors: Wieser, R
• Is Part Of: Journal of physics. Volume 31:Number 32(2019)
• Publication Date: 2019-05-28
• Subjects: double-time Green's functions -- quantum and thermal fluctuations -- magnetism -- susceptibility; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab1f3b
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: One-dimensional ferromagnetic S = 1/2 and S = 1 spin chains with easy-plane and easy-axis exchange anisotropy are studied by the double-time Green's function method. The XYZ model can be used to describe several chain systems as the ferromagnetic spin chain of (CHAB). Alternatively, ferromagnetic spin-spirals with Dzyaloshinsky–Moriya interaction. To study quantum and thermal fluctuations the magnetization and susceptibility are calculated and analyzed as a function of the external field, the strength of the anisotropy and the chain length.