Abstract
The entropy and susceptibility of copper nuclear spins below 1 \ensuremath{\mu}K have been measured as a function of temperature both in the paramagnetic and in the antiferromagnetic states. The critical temperature is 63\ifmmode\pm\else\textpm\fi{} 10 nK, about 30% of the mean-field estimate. The results are in agreement with calculations based on the spin-wave spectrum of the dipolar and the Ruderman-Kittel interactions in the fee lattice of copper.
Sign-in/Register to access full text options 
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.
