Strong Nonlinear Response of Strange Metals

Author(s): Serhii Kryhin, Subir Sachdev, and Pavel A. Volkov We show that nonlinear transport responses in strange metals are strong, larger by a factor of ${E}_{F}/T$ than in Fermi liquids. Within the two-dimensional Yukawa-Sachdev-Ye-Kitaev model of a Fermi surface with a spatially random coupling to a critical scalar, the third order conductivity is found … [Phys. Rev. Lett. 135, 016503] Published Wed Jul 02, 2025