The scaled-invariant Planckian metal and quantum criticality in Ce_1-xNd_xCoIn₅.

ABSTRACT: The mysterious Planckian metal state, showing perfect T-linear resistivity associated with universal scattering rate, 1/τ = αk_BT/ℏ with α ~ 1, has been observed in the normal state of various strongly correlated superconductors close to a quantum critical point. However, its microscopic origin and link to quantum criticality remains an outstanding open problem. Here, we observe quantum-critical T/B-scaling of the Planckian metal state in resistivity and heat capacity of heavy-electron superconductor Ce_1-xNd_xCoIn₅ in magnetic fields near the edge of antiferromagnetism at the critical doping x_c ~ 0.03. We present clear experimental evidences of Kondo hybridization being quantum critical at x_c. We provide a generic microscopic

SUBMITTER: Chang YY 

PROVIDER: S-EPMC9898561 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature