Abstract
As ferromagnetism and superconductivity are usually considered to be antagonistic, the discovery of theircoexistence in UGe2, URhGe, UIr and UCoGe has attracted a lot of interest. The mechanism to explain such astate has, however, not yet been fully elucidated. In these compounds superconductivitymay be unconventional: Cooper pairs could be formed by electrons with parallel spins andmagnetic fluctuations might be involved in the pairing mechanism. URhGe becomesferromagnetic below a Curie temperature of 9.5 K, with a spontaneous moment aligned to thec-axis. For temperatures below 260 mK and fields lower than 2 T, superconductivity was firstobserved in 2001. Recently, we discovered a second pocket of superconductivity. Thisnew pocket of superconductivity appears at higher fields applied close to theb-axis, enveloping a sudden magnetic moment rotation transition atHR = 12 T. Detailed studies of the field induced metamagnetic transition and superconductivity arepresented. The possibility that magnetic fluctuations emerging from a quantumcritical point provide the pairing mechanism for superconductivity is discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
