Kondo effect in Lieb's ferrimagnetic system on the T-shaped bipartite lattice
arXiv:2111.06045 · doi:10.1103/PhysRevB.105.195120
Abstract
The minimal ferrimagnetism by Lieb's theorem emerges on the T-shaped bipartite lattice composed of four sites, which can be realized experimentally, just as Nagaoka ferromagnetism has been demonstrated experimentally using a quartet quantum-dot(J.P.Dehollain et al., Nature 579, 528 (2020).). In this paper, the Kondo effect on this ferrimagnetism is theoretically studied. The magnetic moment is screened in two steps by the Kondo effect and the series conductance is strongly suppressed to , while the parallel conductance has the maximum value . The robustness of these properties against a parameter change toward reducing the Lieb's ferrimagnetism is also discussed, showing the scenarios for entanglement of the degrees of freedom toward the ground state.
arXiv comment8 pages, 8 figures
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