Hidden Kondo Effect in a Correlated Electron Chain
作者： A. A. Zvyagin , H. Johannesson
DOI: 10.1103/PHYSREVLETT.81.2751
关键词: Electron 、 Condensed matter physics 、 Bethe ansatz 、 Electron scattering 、 Scattering 、 Physics 、 Exact solutions in general relativity 、 Kondo effect 、 Quantum mechanics 、 Magnetic impurity 、 Integrable system
摘要: We develop a general Bethe ansatz formalism for diagonalizing an integrable model of magnetic impurity arbitrary spin coupled ferro- or antiferromagnetically to chain interacting electrons. The method is applied open chain, with the exact solution revealing existence ``hidden'' Kondo effect driven by forward electron scattering off impurity. argue that so-called ``operator reflection matrices'' proposed in recent studies related models emulate only electron-impurity scattering, which may explain absence complete screening certain values impurity-electron coupling these models.
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