NMR Study of Magnetic Excitations in CeNiSn

Autor:	Hiroshi Yasuoka, Tetsuo Ohama, Yosikazu Isikawa
Rok vydání:	1995
Předmět:	Physics Nuclear relaxation Spectral weight Condensed matter physics Nuclear Theory Spin–lattice relaxation General Physics and Astronomy Condensed Matter::Strongly Correlated Electrons Knight shift Neutron scattering Anisotropy Line width Excitation
Zdroj:	Journal of the Physical Society of Japan. 64:4566-4569
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.64.4566
Popis:	The anisotropies of the Knight shift and the nuclear spin-lattice relaxation time ( T 1 ) at the Sn sites have been measured up to 300 K with a magnetically aligned powder sample of CeNiSn. In contrast to the results of previous neutron scattering measurements, the anisotropy of 1/ T 1 is weak and almost temperature ( T )-independent. This indicates that the substantial spectral weight exists in the higher energy region than the quasielastic magnetic excitation at high T . Above about 60 K, 1/ T 1 increases linearly with T , suggesting that the T dependence of the quasielastic line width is weak.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b1f3a8193269a59a611aa710ee6c8301 https://doi.org/10.1143/jpsj.64.4566 Zobrazit plný text záznamu