75As-NQR Studies of Filled-Skutterudites PrRu4As12and LaRu4As12
نویسندگان
چکیده
منابع مشابه
Optical 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 ...
متن کاملEinstein oscillators in thallium filled antimony skutterudites.
Inelastic neutron scattering measurements on several Tl filled skutterudites (Tl0.5Co3.5Fe0.5Sb12, Tl0.8Co3FeSb12, and Tl0.8Co4Sb11Sn) all show a sharp peak in the vibrational density of states at 57+/-2 K, which is absent in the unfilled skutterudite CoSb3. Heat capacity measurements on Tl0.8Co4Sb11Sn as compared to CoSb3 are consistent with the presence of a localized vibrational mode associa...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2008
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsjs.77sa.229