O'Neil G, Schmidt D, Miller N A, Ullom J N, Williams A, Arnold G B, Ruggiero S T
National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Phys Rev Lett. 2008 Feb 8;100(5):056804. doi: 10.1103/PhysRevLett.100.056804. Epub 2008 Feb 6.
We have observed the BCS-like density of states predicted for energy-gap suppression by nonmagnetic Anderson impurities in superconductors. We show that Mn impurities in Al exhibit no magnetic character and act exclusively as strong resonant scattering sites without producing time-reverse symmetry breaking of Cooper pairs (pair breaking).
我们已经观察到了超导体中非磁性安德森杂质对能隙抑制所预测的类BCS态密度。我们表明，铝中的锰杂质不具有磁性，仅作为强共振散射位点起作用，而不会导致库珀对的时间反演对称性破缺（配对破缺）。
