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Microscopic evolution of doped Mott insulators from polaronic metal to Fermi liquid

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arxiv 2009.04440 v1 pith:2CNR5TTE submitted 2020-09-09 cond-mat.quant-gas cond-mat.str-elquant-ph

Microscopic evolution of doped Mott insulators from polaronic metal to Fermi liquid

Joannis Koepsell , Dominik Bourgund , Pimonpan Sompet , Sarah Hirthe , Annabelle Bohrdt , Yao Wang , Fabian Grusdt , Eugene Demler
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Guillaume Salomon Christian Gross Immanuel Bloch
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classification cond-mat.quant-gas cond-mat.str-elquant-ph
keywords crossoverfermiliquidaroundconventionalcorrelationsholeinsulators
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The competition between antiferromagnetism and hole motion in two-dimensional Mott insulators lies at the heart of a doping-dependent transition from an anomalous metal to a conventional Fermi liquid. Condensed matter experiments suggest charge carriers change their nature within this crossover, but a complete understanding remains elusive. We observe such a crossover in Fermi-Hubbard systems on a cold-atom quantum simulator and reveal the transformation of multi-point correlations between spins and holes upon increasing doping at temperatures around the superexchange energy. Conventional observables, such as spin susceptibility, are furthermore computed from the microscopic snapshots of the system. Starting from a magnetic polaron regime, we find the system evolves into a Fermi liquid featuring incommensurate magnetic fluctuations and fundamentally altered correlations. The crossover is completed for hole dopings around $30\%$. Our work benchmarks theoretical approaches and discusses possible connections to lower temperature phenomena.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Thermal SU(2) lattice gauge theory for intertwined orders and hole pockets in the cuprates

    cond-mat.str-el 2025-07 unverdicted novelty 6.0

    Monte Carlo study of thermal SU(2) gauge theory with Higgs boson reconciles Fermi arcs and p/8 hole pockets while describing intertwined orders and d-wave superconductivity at lower temperatures.

  2. Lectures on insulating and conducting quantum spin liquids

    cond-mat.str-el 2025-12 unverdicted novelty 3.0

    The fractionalized Fermi liquid state obtained by doping quantum spin liquids resolves key experimental difficulties in cuprate pseudogap metals and d-wave superconductors.

  3. Fractionalized Fermi liquids and the cuprate phase diagram

    cond-mat.str-el 2025-08 unverdicted novelty 3.0

    Reviews the FL* theory for cuprates using ancilla layer models and SU(2) gauge theories to explain pseudogap hole pockets of area p/8, Fermi arcs, and transitions to d-wave superconductivity and Fermi liquid behavior.

  4. Lectures on insulating and conducting quantum spin liquids

    cond-mat.str-el 2025-12 conditional novelty 2.0

    The notes argue that the FL* state — small pockets plus a quantized spin-liquid anomaly — resolves the ADMR pocket and v_F >> v_Delta problems that defeated holon-metal and plain fermionic-parton theories of the cuprates.