Magnetic Field Dependence of the Seebeck Coefficient in the Electron-Doped Cuprate La_2-xCe_xCuO₄

The electron-doped cuprate superconductor La_2-xCe_xCuO₄, across an extended doping range, exhibits the anomalous normal state transport behaviors of the “strange metal”. There are some indications that this strange metal state is related to the emergence of high-temperature superconductivity in the material. 

Here we present a study of high quality thin-films of the electron-doped cuprate La_2-xCe_xCuO₄, reporting on the magnetic field dependence of the thermopower (Seebeck Coefficient), which indicates quantum critical behavior in the normal state.