EFG at Sb site of filled skutterudites
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چکیده
منابع مشابه
Optical properties of the filled skutterudites CeT 4 Sb 12 ( T = Fe , Ru , Os )
We have measured the optical conductivity s1ðoÞ of the filled skutterudites CeFe4Sb12; CeRu4Sb12; and CeOs4Sb12: These s1ðoÞ spectra are explained in terms of the hybridization between Ce 4f states and conduction ðcÞ electron states. From the comparison of the s1ðoÞ spectra, it is concluded that the degree of c–f hybridization is strongest for CeFe4Sb12 and weakest for CeOs4Sb12: r 2003 Elsevie...
متن کاملOptical properties of MFe4P12 filled skutterudites
Infrared reflectance spectroscopy measurements were made on four members of the MFe4P12 family of filled skutterudites, with M5La, Th, Ce, and U. In progressing from M5La to U the system undergoes a metalinsulator transition. It is shown that, although the filling atom induces such dramatic changes in the transport properties of the system, it has only a small effect on lattice dynamics. We dis...
متن کاملResonant Oscillations in Multiple-Filled Skutterudites
Partially filled skutterudites were investigated by ultrafast spectroscopy using a femtosecond laser system, which excites resonant oscillations due to the host–guest interactions. To investigate the effect of individual guest elements on phonon-mediated thermal transport, four skutterudite samples were studied: three samples partially filled with Ba, Yb, and La, respectively, and a fourth with...
متن کاملUltrafast carriers dynamics in filled-skutterudites
Carrier dynamics of filled-skutterudites, an important class of thermoelectric materials, is investigated using ultrafast optical spectroscopy. By tuning the wavelength of the probe laser, charge transfers at different electronic energy levels are interrogated. Analysis based on the KramersKronig relation explains the complex spectroscopy data, which is mainly due to band filling caused by phot...
متن کاملMagnetism in Na-filled Fe-based skutterudites
The interplay of superconductivity and magnetism is a subject of ongoing interest, stimulated most recently by the discovery of Fe-based superconductivity and the recognition that spin-fluctuations near a magnetic quantum critical point may provide an explanation for the superconductivity and the order parameter. Here we investigate magnetism in the Na filled Fe-based skutterudites using first ...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 2006
ISSN: 0921-4526
DOI: 10.1016/j.physb.2006.01.093