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- W4384263437 abstract "In this work, we study a slave-rotor mean-field theory of an extended Hubbard model, applicable to transition metal dichalcogenide moir'e systems, that captures both the formation of Wigner crystals as well as exotic spin states on top of these charge backgrounds. Phase diagrams are mapped out for different choices of long-range Coulomb repulsion strength, reproducing several experimentally found Wigner crystal states. Assuming unbroken time reversal symmetry, we find several spin liquid states as well as dimer states at fractional fillings. While spin dimer states are always found to have the lowest mean field energy, several spin liquid states are energetically competitive and may be stabilized by including gauge fluctuations or further interaction terms. We further discuss possible experimental signatures of these states pertinent to two-dimensional moir'e heterostructures." @default.
- W4384263437 created "2023-07-14" @default.
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- W4384263437 date "2023-07-11" @default.
- W4384263437 modified "2023-10-18" @default.
- W4384263437 title "Mott insulators in moir'e transition metal dichalcogenides at fractional fillings: Slave-rotor mean-field theory" @default.
- W4384263437 doi "https://doi.org/10.48550/arxiv.2307.05676" @default.
- W4384263437 hasPublicationYear "2023" @default.
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