Spectroscopic evidence of mixed angular momentum symmetry in non-centrosymmetric Ru$$_7$$B$$_3

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 in:Scientific reports 2021-12, Vol.11 (1), Article 21030
Main Authors: Datta, Soumya, Vasdev, Aastha, Ramachandran, Ranjani, Halder, Soumyadip, Motla, Kapil, Kataria, Anshu, Arushi, Roy Chowdhury, Rajeswari, Singh, Ravi Prakash, Sheet, Goutam
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cited_by cdi_FETCH-LOGICAL-c2066-2bca36f28e70f5c9ec37ae5bc31f6c54856ef6775be431e8cbf3612b3e06a9493
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container_title Scientific reports
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creator Datta, Soumya
Vasdev, Aastha
Ramachandran, Ranjani
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Singh, Ravi Prakash
Sheet, Goutam
description 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 $$_7$$ 7 B $$_3$$ 3 . Our temperature and magnetic field-dependent studies also indicate that the relative amplitudes of the singlet and triplet components change differently with temperature.
doi_str_mv 10.1038/s41598-021-99878-6
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title Spectroscopic evidence of mixed angular momentum symmetry in non-centrosymmetric Ru$$_7$$B$$_3
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