The Wiedemann-Franz law in doped Mott insulators without quasiparticles

• Published in: Science (American Association for the Advancement of Science) Vol. 382; no. 6674; pp. 1070 - 1073
• Main Authors: Wang, Wen O., Ding, Jixun K., Schattner, Yoni, Huang, Edwin W., Moritz, Brian, Devereaux, Thomas P.
• Format: Journal Article
• Language: English
• Published: Washington The American Association for the Advancement of Science 01.12.2023; AAAS
• Subjects: Absolute zero; Charge materials; Charge transport; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Elementary excitations; Insulators; Lorenz number; Mathematical models; Numerical methods

Many metallic quantum materials display anomalous transport phenomena that defy a Fermi liquid description. Here, we use numerical methods to calculate thermal and charge transport in the doped Hubbard model and observe a crossover separating high- and low-temperature behaviors. Distinct from the be...