Visualizing pairing symmetry in nematic superconductors using spin-polarized spectroscopy of magnetic impurities. (3rd October 2019)

• Record Type: Journal Article
• Authors: Chen, Liang; Zhang, Ya-Li; Han, Rong-Sheng
• Is Part Of: Journal of physics. Volume 31:Number 50(2019)
• Publication Date: 2019-10-03
• Subjects: pairing symmetry -- magnetic impurity -- spin-polarized spectroscopy; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab41c7
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We study the spin-polarized spectral properties of Yu–Shiba–Rusinov resonance states induced by magnetic impurities in 2- and 3-dimensional nematic superconductors: few layer Bi2 Te3 grown on FeTe0.55 Se0.45 (2D) and Cu x Bi2 Se3 (3D). We focus on the relationship between pairing symmetry and the spatial structure of spin-polarized spectroscopy. We calculate the spin-polarized local density of states (SP LDOS) and the corresponding Fourier transformation using the T -matrix method for both the 2- and 3-dimensional materials. Various situations with different impurity orientations and different SP LDOSs have been investigated. We find that, like the quasiparticle interference spectrum, the spin-polarized spectroscopy can be applied to distinguish threefold rotation symmetric pairings, e.g. the plain s -wave pairing, chiral p -wave pairing, etc, and nematic pairings in these materials.