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Article overview
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Characterization of a correlated topological Kondo insulator in one dimension | | I. Hagymasi
; O. Legeza
; | | Date: |
18 Jan 2016 | | Abstract: | We investigate the ground-state of a $p$-wave Kondo-Heisenberg model
introduced by Alexandrov and Coleman with an Ising-type anisotropy in the Kondo
interaction and correlated conduction electrons. Our aim is to understand how
they affect the stability of the Haldane state obtained in the SU(2) symmetric
case without the Hubbard interaction. By applying the density-matrix
renormalization group algorithm and calculating the entanglement entropy we
show that in the anisotropic case a phase transition occurs and a N’eel state
emerges above a critical value of the Coulomb interaction. These findings are
also corroborated by the examination of the entanglement spectrum and the spin
profile of the system which clarify the structure of each phase. | | Source: | arXiv, 1601.4606 | | Services: | Forum | Review | PDF | Favorites | |
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