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. 2017 Feb 8;7:42255. doi: 10.1038/srep42255

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Copyright © 2017, The Author(s)

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(a) J_AF dependence of the critical value K^* of the Kondo coupling for crossover from a low-spin to a high-spin state. The crossover is characterized by the spin-spin correlations shown for both FM and AFM Kondo couplings in the inset. (b) The ground state energy contributions of the kinetic, the Heisenberg and the Kondo terms as a function of K_F (open symbols) and K_AF (filled symbols). (c) Spin-spin (open symbols) and spin-fermion (filled symbols) correlations as a function of external magnetic field for J_AF = 0.2 for different values of K: K = 0 (circle), K_F = 1.0 (diamond) and K_AF = 1.0 (triangle). The dashed lines mark the values of B^c, and . (d) Chirality of each of the eigenvector forming the degenerate ground state manifold as a function of K_F.

Inline graphic — (a) J_AF dependence of the critical value K^* of the Kondo coupling for crossover from a low-spin to a high-spin state. The crossover is characterized by the spin-spin correlations shown for both FM and AFM Kondo couplings in the inset. (b) The ground state energy contributions of the kinetic, the Heisenberg and the Kondo terms as a function of K_F (open symbols) and K_AF (filled symbols). (c) Spin-spin (open symbols) and spin-fermion (filled symbols) correlations as a function of external magnetic field for J_AF = 0.2 for different values of K: K = 0 (circle), K_F = 1.0 (diamond) and K_AF = 1.0 (triangle). The dashed lines mark the values of B^c, and . (d) Chirality of each of the eigenvector forming the degenerate ground state manifold as a function of K_F.