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29 March 2024
 
  » pubmed » pmid15904330

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Inhomogeneous level splitting in Pr 2-x BixRu2O7
J van Duijn ; K H Kim ; N Hur ; D Adroja ; M A Adams ; Q Z Huang ; M Jaime ; S-W Cheong ; C Broholm ; T G Perring ;
Date 6 May 2005
Journal Phys Rev Lett, 94 (17), 177201
AbstractWe report that Bi doping drives Pr 2-x BixRu2O7 from an antiferromagnetic insulator (x = 0) to a metallic paramagnet (x approximately 1) with a broad low T maximum in C/T. Neutron scattering reveals local low energy spin excitations (variant Planck’s omega approximately 1 meV) with a spectrum that is unaffected by heating to k(B)T >> variant Planck’s omega. We show that a continuous distribution of splittings of the non-Kramers Pr3+ ground-state doublet such as might result from various types of lattice strain can account for all the data.
Source PubMed, pmid15904330
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