NMR study of quasi-one-dimensional itinerant-electron magnets (, Lu and Sc)

✍ Scribed by Y. Muro; H. Nakamura; T. Kohara

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 562 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.041

✦ Synopsis

55 Mn-NMR measurements, which revealed previously the presence of spin pseudogap in YMn 4 Al 8 , have been extended to LuMn 4 Al 8 and ScMn 4 Al 8 . Temperature (T) dependences of the Knight shift, K, and the nuclear spin-lattice relaxation rate, 1=T 1 , are well explained by the same pseudogap model used to explain a broad maximum observed in the T-dependence of the susceptibility, indicating common nature in the spin excitation spectrum in the quasi-one-dimensional itinerant-electron compounds.