Knight shift in superconducting vanadium
Knight shift in superconducting vanadium
复制标题
超导钒的奈特位移
DOI：
10.1134/s0021364008060106
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
L. Tagirov
中科院分区：
文献类型：
--
作者：
I. Garifullin;N. Garif’yanov;R. Salikhov;L. Tagirov
金属钒在正常状态和超导状态下的奈特位移已经被测量。与之前获得的结果相反，这种转变在过渡到超导状态后似乎发生了变化。人们发现，掺杂铁杂质的钒样品中超导态的奈特位移行为与“纯”样品中的不同。作为对该效应的可能解释，讨论了由于传导电子在铁杂质上的散射而导致费米能级附近的态密度峰值变宽以及早期预测的 NMR 谱线的杂质极化位移。
The Knight shift in metallic vanadium in the normal and superconducting states has been measured. In contrast to the previously obtained results, this shift appears to change after the transition to the superconducting state. The behavior of the Knight shift in the superconducting state in vanadium samples doped with iron impurities has been found to be different from that in the “pure” samples. As a possible explanation of the effect, the broadening of the peak of the density of states near the Fermi level due to the scattering of conduction electrons on the iron impurities and the earlier predicted impurity polarization shift of the NMR line are discussed.