Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe

Y. Tokunaga, D. Aoki, H. Mayaffre, S. Krämer, M. H. Julien, C. Berthier, M. Horvatić, H. Sakai, T. Hattori, S. Kambe, Shingo Araki

Research output: Contribution to journalArticle

Abstract

We review our 59Co NMR study in a URhGe single crystal doped with 10% cobalt. The spin-spin relaxation time (T2) measurements have revealed a divergence of electronic spin fluctuations in the vicinity of a field-induced tricritical point (TCP) locating around 13 T. The fluctuations is developed in the same limited field region around the TCP as that where a reentrant superconductivity (RSC) is observed in URhGe. The finding strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC.

Original languageEnglish
Pages (from-to)122-124
Number of pages3
JournalPhysica B: Condensed Matter
Volume536
DOIs
Publication statusPublished - May 1 2018

Keywords

  • Ferromagnetic superconductor
  • Quantum fluctuation
  • Reentrant superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Tokunaga, Y., Aoki, D., Mayaffre, H., Krämer, S., Julien, M. H., Berthier, C., Horvatić, M., Sakai, H., Hattori, T., Kambe, S., & Araki, S. (2018). Field-induced reentrant superconductivity driven by quantum tricritical fluctuations in URhGe. Physica B: Condensed Matter, 536, 122-124. https://doi.org/10.1016/j.physb.2017.09.022