Abstract：We use the spin non-degenerate single impurity Anderson model to investigate the influence of the local spin polarization to the Kondo effect. By using the Schrieffer-Wolff transformation, we obtain a generalized s-d exchange Hamiltonian, which describes the interaction between a polarized local spin and conduction electrons. In this case, the singlet is no longer an eigenstate as shown by variational calculations where the splitting of the local energy Δ = εd↑-εd↓ can be arbitrarily small. The local spin polarization generates the instability of the singlet ground state of the S = 1/2 s-d exchange model.
出版日期: 2007-03-05
引用本文:
. Influence of local spin polarization to the Kondo effect[J]. Frontiers of Physics in China - Selected Publications from Chinese Universities, 2007, 2(1): 41-43.
LI Huan, LI Huan, GUO Wei, GUO Wei. Influence of local spin polarization to the Kondo effect. Front. Phys. , 2007, 2(1): 41-43.
