Time-reversal-symmetry breaking and unconventional pairing in the noncentrosymmetric superconductor La$_{7}$Rh$_{3}$ probed by $\mu$SR.
Noncentrosymmetric superconductors are expected to exhibit an unconventional superconducting ground-state, which consists of an admixture of spin-singlet and spin-triplet Cooper pairs. Nevertheless, unconventional nature of superconducting ground-state has yet to be conclusively verified in any noncentrosymmetric superconductors to this date. Here we report that the superconducting ground state of La$_{7}$Rh$_{3}$ is gapped and spontaneously breaks the time reversal symmetry at the onset of superconductivity. The analysis of the pairing symmetries identifies the ground states compatible with time reversal symmetry breaking. Theoretical results suggest that superconductivity is driven by electron-electron interactions, confirming the unconventional nature of superconductivity.
Publisher URL: http://arxiv.org/abs/1802.01533
DOI: arXiv:1802.01533v1
Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.
Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.