Evolution of c-f hybridization and two-component Hall effect in β-YbAlB4.
Evolution of c-f hybridization and two-component Hall effect in β-YbAlB4.
复制标题
β-YbAlB4 中 c-f 杂化和双组分霍尔效应的演变。
DOI：
10.1016/j.jallcom.2012.09.122
复制
发表时间：
2012
影响因子：
8.6
通讯作者：
P. Rogl
中科院分区：
文献类型：
--
作者：
Z. Malik;A. Grytsiv;H. Michor;G. Rogl;S. Puchegger;H. Müller;M. Kriegisch;E. Bauer;C. Eisenmenger;P. Rogl
是一种独特的重费米子超导体，它表现出非常规的量子临界性，而不需要调整到强中间价态。尽管大的相干温度，设置的纵向电阻率的峰值，我们的霍尔效应测量结果表明，从不相干的本地时刻的共振斜散射持续到至少，其中霍尔系数表现出明显的最小信号的另一个形成的相干性。的观察强烈表明，杂化之间的时刻和传导电子具有明显的近藤或相干尺度和200 K的双组分字符，这是证实了磁场的依赖性。
is the unique heavy fermion superconductor that exhibits unconventional quantum criticality without tuning in a strongly intermediate valence state. Despite the large coherence temperature, set by the peak of the longitudinal resistivity, our Hall effect measurements reveal that resonant skew scattering from incoherent local moments persists down to at least, where the Hall coefficient exhibits a distinct minimum signaling another formation of coherence. The observation strongly suggests that the hybridization betweenmoments and conduction electrons has a two-component character with distinct Kondo or coherence scalesofand 200 K; this is confirmed by the magnetic field dependence of.