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Interaction-driven fractional quantum Hall state of hard-core bosons on kagome lattice at one-third filling

Title: Interaction-driven Fractional Quantum Hall State Of Hard-core Bosons On Kagome Lattice At One-third Filling.
Name(s): Zhu, W., author
Gong, S. S., author
Sheng, D. N., author
Type of Resource: text
Genre: Text
Date Issued: 2016-07-13
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: There has been a growing interest in realizing topologically nontrivial states of matter in band insulators, where a quantum Hall effect can appear as an intrinsic property of the band structure. While ongoing progress is under way with a number of directions, the possibility of realizing novel interaction-generated topological phases, without the requirement of a nontrivial invariant encoded in single-particle wave function or band structure, can significantly extend the class of topological materials and is thus of great importance. Here, we show an interaction-driven topological phase emerging in an extended Bose-Hubbard model on a kagome lattice, where the noninteracting band structure is topological trivial with zero Berry curvature in the Brillouin zone. By means of an unbiased state-of-the-art density-matrix renormalization group technique, we identify that the ground state in a broad parameter region is equivalent to a bosonic fractional quantum Hall Laughlin state, based on the characterization of universal properties including ground-state degeneracy, edge excitations, and anyonic quasiparticle statistics. Our work paves a way to finding an interaction-induced topological phase at the phase boundary of conventionally ordered solid phases.
Identifier: FSU_libsubv1_wos_000379502800001 (IID), 10.1103/PhysRevB.94.035129 (DOI)
Keywords: chiral spin liquid, excitations, gap, insulator, model, valence-bond
Publication Note: The publisher’s version of record is available at
Persistent Link to This Record:
Host Institution: FSU
Is Part Of: Physical Review B.
Issue: iss. 3, vol. 94

Choose the citation style.
Zhu, W., Gong, S. S., & Sheng, D. N. (2016). Interaction-driven Fractional Quantum Hall State Of Hard-core Bosons On Kagome Lattice At One-third Filling. Physical Review B. Retrieved from