Spectroscopic evidence of mixed angular momentum symmetry in non-centrosymmetric Ru7?B3?
Abstract
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 Ru7?B3?. Our temperature and magnetic field-dependent studies also indicate that the relative amplitudes of the singlet and triplet components change differently with temperature.
- Publication:
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Scientific Reports
- Pub Date:
- October 2021
- DOI:
- 10.1038/s41598-021-99878-6
- arXiv:
- arXiv:2102.04276
- Bibcode:
- 2021NatSR..1121030D
- Keywords:
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- Condensed Matter - Superconductivity