Anomalous spin-lattice relaxation in dilute RhFe at positive and negative nanokelvin spin temperatures
Research output: Contribution to journal › Article
We have investigated at ultralow temperatures the spin-lattice relaxation in rhodium samples with about 10 p.p.m. of iron impurities. A strong decrease in the Korringa constant κ, dependent on the sign of the nuclear spin temperature T, was observed below 1 mT. Our data on the spin-lattice relaxation time τ1, measured at the electronic temperature Te = 120 µK, fit the equation 1/τ1 - 1/(κ0/Te) = 1/τimp 1(B, T), where the impurity term τimp 1(B, T) has a contribution proportional to the inverse nuclear spin temperature in small fields.
|Number of pages||6|
|Publication status||Published - Mar 1994|
|MoE publication type||A1 Journal article-refereed|
- negative temperatures, rhodium-iron, spin-lattice relaxation