期刊
PHYSICA B-CONDENSED MATTER
卷 349, 期 1-4, 页码 76-83出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physb.2004.01.153
关键词
electric field gradient; strongly correlated systems; rare earth; Cd-111 impurity; RSn3; Rln(3); hyperfine interaction
We investigated the effect of spin polarization on the structural properties and the electric field gradient (EFG) on Sn, In, and Cd impurities in RSn3 (R = Sm, Eu, Gd) and RIn3 (R = Tm, Yb, Lu) compounds. The calculations were performed self-consistently using the scalar-relativistic full potential linearized augmented plane wave method. The local density approximations and generalized gradient approximation (GGA) without spin polarization and with spin polarization (GGA + SP) to density functional theory were applied. In addition to that we performed some calculations within open core treatment (GGA + open core). It is clearly seen that GGA + SP is successful in predicting the larger lattice parameter and the dramatic drop of EFG for R = (Eu, Yb) relative to other rare-earth compounds. (C) 2004 Published by Elsevier B.V.
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