Anomalous spin-lattice relaxation in dilute RhFe at positive and negative nanokelvin temperatures

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We report investigations at ultra low positive and negative spin temperatures on the spin-lattice relaxation in a rhodium sample with 6 ppm of iron impurities. A strong decrease in the Korringa constant κ, dependent on the inverse of nuclear spin temperature 1 T, was observed in fields below 1 mT; at B=0, the κ was almost two times smaller at T=0.8 nK than at -0.8 nK. These results indicate strong modification of magnetic impurity scattering by the large nuclear susceptibility of the host material.


Original languageEnglish
Pages (from-to)341-342
Number of pages2
JournalPhysica B: Condensed Matter
Issue numberPART 1
Publication statusPublished - 2 Feb 1994
MoE publication typeA1 Journal article-refereed

    Research areas

  • magnetic impurities, negative temperatures, spin-lattice relaxation

ID: 4389031