Topological Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model

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Topological Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model. / Vanhala, Tuomas I.; Siro, Topi; Liang, Long; Troyer, Matthias; Harju, Ari; Törmä, Päivi.

In: Physical Review Letters, Vol. 116, No. 22, 225305, 02.06.2016, p. 1-6.

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Vanhala, Tuomas I. ; Siro, Topi ; Liang, Long ; Troyer, Matthias ; Harju, Ari ; Törmä, Päivi. / Topological Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model. In: Physical Review Letters. 2016 ; Vol. 116, No. 22. pp. 1-6.

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@article{4db021addcf14965aa7b54df926b80ef,
title = "Topological Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model",
abstract = "Using dynamical mean-field theory and exact diagonalization we study the phase diagram of the repulsive Haldane-Hubbard model, varying the interaction strength and the sublattice potential difference. In addition to the quantum Hall phase with Chern number C=2 and the band insulator with C=0 present already in the noninteracting model, the system also exhibits a C=0 Mott insulating phase, and a C=1 quantum Hall phase. We explain the latter phase by a spontaneous symmetry breaking where one of the spin components is in the Hall state and the other in the band insulating state.",
author = "Vanhala, {Tuomas I.} and Topi Siro and Long Liang and Matthias Troyer and Ari Harju and P{\"a}ivi T{\"o}rm{\"a}",
note = "| openaire: EC/FP7/340748/EU//CODE",
year = "2016",
month = "6",
day = "2",
doi = "10.1103/PhysRevLett.116.225305",
language = "English",
volume = "116",
pages = "1--6",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",

}

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TY - JOUR

T1 - Topological Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model

AU - Vanhala, Tuomas I.

AU - Siro, Topi

AU - Liang, Long

AU - Troyer, Matthias

AU - Harju, Ari

AU - Törmä, Päivi

N1 - | openaire: EC/FP7/340748/EU//CODE

PY - 2016/6/2

Y1 - 2016/6/2

N2 - Using dynamical mean-field theory and exact diagonalization we study the phase diagram of the repulsive Haldane-Hubbard model, varying the interaction strength and the sublattice potential difference. In addition to the quantum Hall phase with Chern number C=2 and the band insulator with C=0 present already in the noninteracting model, the system also exhibits a C=0 Mott insulating phase, and a C=1 quantum Hall phase. We explain the latter phase by a spontaneous symmetry breaking where one of the spin components is in the Hall state and the other in the band insulating state.

AB - Using dynamical mean-field theory and exact diagonalization we study the phase diagram of the repulsive Haldane-Hubbard model, varying the interaction strength and the sublattice potential difference. In addition to the quantum Hall phase with Chern number C=2 and the band insulator with C=0 present already in the noninteracting model, the system also exhibits a C=0 Mott insulating phase, and a C=1 quantum Hall phase. We explain the latter phase by a spontaneous symmetry breaking where one of the spin components is in the Hall state and the other in the band insulating state.

UR - http://www.scopus.com/inward/record.url?scp=84973293614&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.116.225305

DO - 10.1103/PhysRevLett.116.225305

M3 - Article

VL - 116

SP - 1

EP - 6

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 225305

ER -

ID: 4849547