The normal states of magnetic d and f transition metals
The normal states of magnetic d and f transition metals
复制标题
磁性 d 和 f 过渡金属的正常状态
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
G. Lonzarich
中科院分区：
文献类型：
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作者：
S. Julian;C. Pfleiderer;F. Grosche;N. Mathur;G. McMullan;A. Diver;I. R. Walker;G. Lonzarich
通过测量化学计量比d和f化合物的电阻率随温度和压力的变化关系，研究了居里温度或尼尔温度为零的磁性金属的正常态。近铁磁d金属的结果可以描述在一个广泛的温度和压力范围内的边缘费米液体的定量模型的基础上推断的非弹性中子散射数据的色散自旋涨落谱。反铁磁f金属的行为也是非常规的，但在某种程度上还不能很容易地分类。在临界压力附近，在冷凝成低于0.4 K的短相干长度超导态之前，在近二十年的温度下，显示出电阻率的形式。的等电子和同构化合物，与晶格单元体积略小于，保持正常下降到20 mK，并显示了电阻率的形式超过十年低于几个开尔文在环境压力下。Ce系统的这些发现还没有被描述一致的铁磁d金属开发的模型的扩展。
The normal states of magnetic metals with vanishing Curie or Neel temperatures are investigated by means of measurements of the temperature and pressure dependence of the resistivity in the stoichiometric d and f compounds and . The results for the nearly ferromagnetic d metals may be described over a wide range in temperature and pressure in terms of a quantitative model of a marginal Fermi liquid based on dispersive spin-fluctuation spectra inferred from inelastic neutron scattering data. The behaviour of the antiferromagnetic f metals is also unconventional, but in a way which cannot yet be readily categorized. Near the critical pressure where , displays a resistivity of the form over nearly two decades in temperature before condensing into a short-coherence-length superconducting state below 0.4 K. The isoelectronic and isostructural compound , with a lattice cell volume slightly smaller than that of , remains normal down to 20 mK and shows a resistivity of the form over a decade below several kelvin at ambient pressure. These findings for the Ce systems have not yet been described consistently in terms of an extension of the model developed for the ferromagnetic d metals.