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Summary
This summary is machine-generated.

We present a new model for bad metals, revealing T-linear resistivity and violations of the Wiedemann-Franz law in strongly correlated materials. This research offers insights into anomalous transport phenomena.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • Strongly correlated metals exhibit anomalous transport properties.
  • T-linear resistivity above the Mott-Ioffe-Regel limit is a key characteristic.

Purpose of the Study:

  • Introduce a tractable microscopic model for bad metals.
  • Characterize electric, thermal, and thermoelectric transport in strongly correlated systems.

Main Methods:

  • Modified the Hubbard model by incorporating a screened Coulomb interaction.
  • Analyzed the electric, thermal, and thermoelectric transport properties.

Main Results:

  • Observed T-linear resistivity above the Mott-Ioffe-Regel limit across the phase diagram.
  • Demonstrated strong violation of the Wiedemann-Franz law.
  • Found a large thermopower with potential sign changes.

Conclusions:

  • The new model successfully captures anomalous transport in bad metals.
  • The screened Coulomb interaction is crucial for understanding these phenomena.
  • The findings have implications for designing novel electronic and thermoelectric materials.