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Quasicrystalline Spin Liquid

Authors :
Kim, Sunghoon
Saad, Mohammad
Mao, Dan
Agarwala, Adhip
Chowdhury, Debanjan
Publication Year :
2024

Abstract

The interplay of electronic interactions and frustration in crystalline systems leads to a panoply of correlated phases, including exotic Mott insulators with non-trivial patterns of entanglement. Disorder introduces additional quantum interference effects that can drive localization phenomena. Quasicrystals, which are neither disordered nor perfectly crystalline, are interesting playgrounds for studying the effects of interaction, frustration, and quantum interference. Here we consider a solvable example of a quantum spin liquid on a tri-coordinated quasicrystal. We extend Kitaev's original construction for the spin model to our quasicrystalline setting and perform a large scale flux-sampling to find the ground-state configuration in terms of the emergent majorana fermions and flux excitations. This reveals a fully gapped quantum spin liquid, regardless of the exchange anisotropies, accompanied by a tendency towards non-trivial (de-)localization at the edge and the bulk. The advent of moir\'e materials and a variety of quantum simulators provide a new platform to bring phases of quasicrystalline quantum matter to life in a controlled fashion.<br />Comment: 5 pages, 3 figures. Supplementary material: 5 pages, 7 figures

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2402.07971
Document Type :
Working Paper