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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Published inScientific reports Vol. 11; no. 1; p. 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 Journal Article
LanguageEnglish
Published England 26.10.2021
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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.
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ISSN:2045-2322
DOI:10.1038/s41598-021-99878-6