NMR study in the superconducting silicon clathrate compoundNaxBaySi46
نویسندگان
چکیده
منابع مشابه
NMR/MRI study of clathrate hydrate mechanisms.
Clathrate hydrates are of great importance in many aspects. However, hydrate formation and dissociation mechanisms, essential to all hydrate applications, are still not well understood due to the limitations of experimental techniques capable of providing dynamic and structural information on a molecular level. NMR has been shown to be a powerful tool to noninvasively measure molecular level dy...
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چکیده ندارد.
15 صفحه اولSoft X-ray Photoelectron Spectroscopy in Silicon Clathrate Superconductors
Silicon clathrate compounds consist of fullerenelike polyhedral Si-cages, which share their faces to form a three-dimensional Si-sp 3 covalent network. Guest elements such as an alkali atom or an alkaliearth one can be encapsulated in the cage. Recently, these compounds have attracted strong interest due to the discovery of superconductivity in a metal-doped silicon clathrate, Ba6Na2Si46 [1], a...
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Multiple-quantum nuclear-magnetic-resonance techniques are used to study the distribution of hydrogen in hydrogenated amorphous silicon. Using the fact that multiple-quantum excitation is limited by the size of the dipolar-coupled spin system, we show that the predominant bonding environment for hydrogen is a cluster of four to seven atoms. For device-quality films, the concentration of these c...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1996
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.54.13242