4f-electron localization in CexLa 1-xM In5 with M=Co, Rh, or Ir.
4f-electron localization in CexLa 1-xM In5 with M=Co, Rh, or Ir.
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DOI：
10.1103/physrevlett.93.186405
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发表时间：
2004-10
影响因子：
8.6
通讯作者：
N. Harrison;U. Alver;R. Goodrich;I. Vekhter;J. Sarrao;P. G. Pagliuso;N. O. Moreno;L. Balicas;Z. Fisk;D. Hall;R. Macaluso;J. Chan
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文献类型：
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作者：
N. Harrison;U. Alver;R. Goodrich;I. Vekhter;J. Sarrao;P. G. Pagliuso;N. O. Moreno;L. Balicas;Z. Fisk;D. Hall;R. Macaluso;J. Chan
de Haas-van Alphen对Ce(x)La(1-x)MIn(5)的测量得出了取决于M=Co和Ir还是M=Rh的不同类型的行为。在M=Co和Ir的情况下，更强的x依赖散射表明，传导电子与4f电子之间有更强的相对耦合，J/W，这将解释重复合费米-液态的发展，如x- >1。在M= Rh的情况下，任何x都不能形成复合费米-液体状态，这与提出反铁磁性是由自旋密度波形成的理论模型是不一致的。
de Haas-van Alphen measurements on Ce(x)La(1-x)MIn(5) yield contrasting types of behavior that depend on whether M=Co and Ir or M=Rh. A stronger x-dependent scattering in the case of M=Co and Ir is suggestive of a stronger relative coupling, J/W, of the conduction electrons to the 4f electrons, which would then account for the development of a heavy composite Fermi-liquid state as x-->1. The failure of a composite Fermi-liquid state to form for any x in the case of M= Rh is shown to be inconsistent with theoretical models that propose antiferromagnetism to result from spin-density-wave formation.