MgB2 中低 B 同位素系数的实验确认
超导电性
2009-09-29 v2
摘要
最近的研究表明，需要重新审视关于 MgB2 中同位素系数实验值与理论值不一致的最初解释。考虑到在剩余电阻率为几 cm 的样品中，由无序效应产生的临界温度变化可能与由同位素效应引起的变化相当，我们采用了一种评估 B 同位素系数的程序，该程序考虑了这些效应，获得的值与先前的结果一致，从而证实 MgB2 的物理机制中仍存在未明之处。
引用
@article{arxiv.0807.1263,
title = {Experimental confirmation of the low B isotope coefficient in MgB2},
author = {P. Brotto and M. Tropeano and C. Ferdeghini and P. Manfrinetti and A. Palenzona and E. Galleani d Agliano and M. Putti},
journal= {arXiv preprint arXiv:0807.1263},
year = {2009}
}
备注
8 pages, 3 figures Title has been changed A statement has been added in page 7 of the pdf file "Finally we would..." Reference 21 has been added Figure 1 anf Figure 2 have been changed