论文标题
hund's-kondo型号的三胞胎配对机制：ute $ _ {2} $和cerh $ _ {2} $ as $ _ {2} $
Triplet pairing mechanisms from Hund's-Kondo models: applications to UTe$_{2}$ and CeRh$_{2}$As$_{2}$
论文作者
论文摘要
观察到几个基于U和CE的候选三胞胎超导体共享一个共同的结构基序，成对由反转中心隔开，我们假设基于Hund's and Kondo Itsportions的相互作用的三重态配对机制，这是该结构所独有的。在洪德相互作用的情况下，价波动会在电子和当地矩之间产生三重态超换。对称中心的偏移允许由所得的近藤效应形成的自旋三个对，以将其脱落到费米表面上，从而导致超导性。我们在最小的两通道近通晶格模型中演示了这种机制，并向现有实验提供了对这种配对机制的支持。
Observing that several U and Ce based candidate triplet superconductors share a common structural motif, with pairs of magnetic atoms separated by an inversion center, we hypothesize a triplet pairing mechanism based on an interplay of Hund's and Kondo interactions that is unique to this structure. In the presence of Hund's interactions, valence fluctuations generate a triplet superexchange between electrons and local moments. The offset from the center of symmetry allows spin-triplet pairs formed by the resulting Kondo effect to delocalize onto the Fermi surface, precipitating superconductivity. We demonstrate this mechanism within a minimal two-channel Kondo lattice model and present support for this pairing mechanism from existing experiments.
