Electronic mean free path of the cuprate superconductor Bi2Sr2CaCu2O8+δ from thermal Hall conductivityRemoveEmma Campillo, Manel Mezidi, Lu Chen, Ashvini Vallipuram, Jordan Baglo, Munkhtuguldur Altangerel, Gaël Grissonnanche, Genda Gu, and Louis TailleferPhys. Rev. B 114, 134508 (2026)