Visualizing pairing symmetry in nematic superconductors using spin-polarized spectroscopy of magnetic impurities

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 Bi2Te3 grown on FeTe0.55Se0.45 (2D) and CuxBi2Se3 (3D). We focus on the relationship between pairing symmetry and the spatial...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2019-12, Vol.31 (50), p.505603-505603
Main Authors: Chen, Liang, Zhang, Ya-Li, Han, Rong-Sheng
Format: Article
Language:English
Subjects:
magnetic impurity
pairing symmetry
spin-polarized spectroscopy
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Summary: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 Bi2Te3 grown on FeTe0.55Se0.45 (2D) and CuxBi2Se3 (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.
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/ab41c7