Spectroscopic evidence of mixed angular momentum symmetry in non-centrosymmetric Ru[Formula: see text]B[Formula: see text]

Superconducting crystals with a lack of inversion symmetry can potentially host unconventional pairing. However, till today, no direct conclusive experimental evidence of such unconventional order parameters in non-centrosymmetric superconductors has been reported. In this paper, through direct meas...

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Bibliographic Details
Published in:Scientific reports 2021-10, Vol.11 (1), p.21030-21030
Main Authors: Datta, Soumya, Vasdev, Aastha, Ramachandran, Ranjani, Halder, Soumyadip, Motla, Kapil, Kataria, Anshu, Arushi, Roy Chowdhury, Rajeswari, Singh, Ravi Prakash, Sheet, Goutam
Format: Article
Language:English
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Summary:Superconducting crystals with a lack of inversion symmetry can potentially host unconventional pairing. However, till today, no direct conclusive experimental evidence of such unconventional order parameters in non-centrosymmetric superconductors has been reported. In this paper, through direct measurement of the superconducting energy gap by scanning tunnelling spectroscopy, we report the existence of both s-wave (singlet) and p-wave (triplet) pairing symmetries in non-centrosymmetric Ru[Formula: see text]B[Formula: see text]. Our temperature and magnetic field-dependent studies also indicate that the relative amplitudes of the singlet and triplet components change differently with temperature.
ISSN:2045-2322
DOI:10.1038/s41598-021-99878-6