Electron spin resonance on the spin-1/2 triangular magnet NaYbS2. (15th March 2019)

• Record Type: Journal Article
• Authors: Sichelschmidt, Jörg; Schlender, Philipp; Schmidt, Burkhard; Baenitz, Michael; Doert, Thomas
• Is Part Of: Journal of physics. Volume 31:Number 20(2019)
• Publication Date: 2019-03-15
• Subjects: electron spin resonance -- spin liquid -- triangular lattice compounds; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab071d
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The delafossite structure of NaYbS2 contains a planar spin-1/2 triangular lattice of Yb 3+ ions and features a possible realisation of a quantum spin-liquid state. We investigated the Yb 3+ spin dynamics by electron spin resonance (ESR) in single-crystalline samples of NaYbS2 . Very clear spectra with a well-resolved and large anisotropy could be observed down to the lowest accessible temperature of 2.7 K. In contrast to the ESR properties of other known spin-liquid candidate systems, the resonance seen in NaYbS2 is accessible at low fields (<1 T) and is narrow enough for accurate characterisation of the relaxation rate as well as the g factor of the Yb 3+ spins.