Detailed Study of Normal State of LaNiGa2 Reveals No Large Interactions

Igor, Cameron and Phurba teamed up with former students Adam Dioguardi and Tanat Kissikov to investigate the superconductor LaNiGa2.  This material has attracted attention because muon spin resonance experiments reported tiny magnetic fields spontaneously generated in the superconducting state, suggesting an exotic form of the Cooper pairs.  This type of superconductivity usually only occurs in materials with strong magnetic interactions in the normal state, but our work shows no evidence of strong correlations that might be responsible, leaving the unusual behavior in the superconducting state a mystery.

2024

Sherpa, P.; Vinograd, I.; Shi, Y.; Sreedhar, S. A.; Chaffey, C.; Kissikov, T.; Jung, M. -C.; Botana, A. S.; Dioguardi, A. P.; Yamamoto, R.; Hirata, M.; Conti, G.; Nemsak, S.; Badger, J. R.; Klavins, P.; Vishik, I.; V. Taufour,; Curro, N. J.

Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa2 Journal Article

In: Phys. Rev. B., vol. 109, pp. 125113, 2024.

Links | BibTeX