固体电子性质的NMR研究
NMR studies of electronic properties of solids
摘要:
NMR技术是非常必要的,因为它允许在材料中进行原子尺度的测量。这篇文章的目的是提出的主要参数访问NMR实验,并将它们与电子相关性不占主导地位的简单固体的电子性质。它将表明,在金属的泡利顺磁性,即电子态密度是通过NMR位移和自旋晶格弛豫数据。这些也允许确定某些电子结构或SC状态中的电子间隙。还强调了通过NMR揭示杂质和无序的发生率的能力。一篇补充文章将致力于强相关材料的具体性质,这些材料已经通过NMR实验揭示和研究。
英文摘要:
The NMR technique is quite essential as it permits atomic scale measurements in materials. The aim of this article is to present the main parameters accessible to NMR experiments and to relate them to the electronic properties of simple solids in which electronic correlations are not dominant. It will be shown that in metals the Pauli paramagnetism, that is the electronic density of states is accessible through NMR shift and spin lattice relaxation data. Those permit as well to determine electronic gaps in some electronic structures, or in the SC state. The capability to reveal by NMR the incidence of impurities and disorder is also underlined. A complementary article will be dedicated to the specific properties of strongly correlated materials which have been revealed and studied by NMR experiments.
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