Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, USA.
Phys Rev Lett. 2011 Dec 23;107(26):266405. doi: 10.1103/PhysRevLett.107.266405.
We derive the coupling of a localized hexadecapolar mode to conduction electrons in tetragonal symmetry. The derivation can be easily adapted to arbitrary multipoles in an arbitrary environment. We relate our model to the two-channel Kondo (2CK) model and show that for an f(2) configuration a relevant crystal field splitting in addition to the 2CK interaction is intrinsic to tetragonal symmetry. We discuss possible realizations of a hexadecapolar Kondo effect in URu(2)Si(2). Solving our model we find good agreement with susceptibility and specific heat measurements in Th(1-x)U(x)Ru(2)Si(2) (x≪1).
我们推导出了在四方对称中局部十六极模式与传导电子的耦合。该推导可以很容易地应用于任意环境中的任意多极。我们将我们的模型与双通道 Kondo（2CK）模型联系起来，并表明对于 f(2)构型，除了 2CK 相互作用之外，外加的晶场分裂对于四方对称是固有存在的。我们讨论了在 URu(2)Si(2)中实现十六极 Kondo 效应的可能途径。通过求解我们的模型，我们发现与 Th(1-x)U(x)Ru(2)Si(2)（x≪1）中的磁化率和比热测量结果非常吻合。
