Evolution of4felectron states in the metal-insulator transition ofPrRu4P12
Evolution of4felectron states in the metal-insulator transition ofPrRu4P12
复制标题
PrRu4P12金属-绝缘体转变中4f电子态的演化
DOI:
10.1103/physrevb.72.024414
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发表时间:
2005
影响因子:
3.7
通讯作者:
T. Sakakibara
中科院分区:
文献类型:
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作者:
K. Iwasa;L. Hao;K. Kuwahara;M. Kohgi;S. Saha;H. Sugawara;Y. Aoki;H. Sato;T. Tayama;T. Sakakibara
Magnetic excitations of the filled skutterudite $\mathrm{Pr}{\mathrm{Ru}}_{4}{\mathrm{P}}_{12}$ exhibiting a metal-insulator (M-I) transition at ${T}_{\mathrm{M}\text{\ensuremath{-}}\mathrm{I}}=63\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ were studied by inelastic neutron scattering experiment. The spectra at temperatures much lower than ${T}_{\mathrm{M}\text{\ensuremath{-}}\mathrm{I}}$ are described as well-defined crystal-field excitations. With approaching ${T}_{\mathrm{M}\text{\ensuremath{-}}\mathrm{I}}$, the excitation peaks broaden and shift considerably together with the temperature variation of the carrier number and the atomic displacement in the transition. The $4f$ electron states evolve from the well-localized state in the insulator phase to the strongly hybridized itinerant state by $p\text{\ensuremath{-}}f$ mixing near ${T}_{\mathrm{M}\text{\ensuremath{-}}\mathrm{I}}$. The hybridization is responsible for the M-I transition of $\mathrm{Pr}{\mathrm{Ru}}_{4}{\mathrm{P}}_{12}$.
DOI:
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发表时间:
2004
期刊:
Journal of Magnetism and Magnetic Materials 272-276
影响因子:
--
作者:
L.Hao;K.Iwasa;K.Kuwahara;M.Kohgi;S.R.Saha;et al.
通讯作者:
et al.
DOI:
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发表时间:
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期刊:
影响因子:
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