Strange Metallic Transport in the Antiferromagnetic Regime of Electron Doped Cuprates

Abstract

We report magnetoresistance and Hall Effect results for electron-doped films of the high-temperature superconductor La${}_{2-x}$Ce${}_x$CuO${}_4$ (LCCO) for temperatures from 0.7 to 45 K and magnetic fields up to 65 T. For x = 0.12 and 0.13, just below the Fermi surface reconstruction (FSR), the normal state in-plane resistivity exhibits a well-known upturn at low temperature. Our new results show that this resistivity upturn is eliminated at high magnetic field and the resistivity becomes linear-in-temperature from $\sim$ 40 K down to 0.7 K. The magnitude of the linear coefficient scales with Tc and doping, as found previously [1,2] for dopings above the FSR. In addition, the normal state Hall coefficient has an unconventional field dependence for temperatures below 50K. This anomalous transport data presents a new challenge to theory and suggests that the strange metal normal state is also present in the antiferromagnetic regime.

15 pages and 5 figures. comments welcome

References in corpus (4)

• Quantum Criticality in Heavy Fermion Metals
• High-field Hall resistivity and magnetoresistance in electron-doped Pr_2-xCe_xCuO_{4-δ}
• Fermi Surface reconstruction and anomalous low temperature resistivity in electron-doped La2-xCexCuO4
• Link between magnetism and resistivity upturn in cuprates: a thermal conductivity study of La${}_{2-x}$Sr${}_x$CuO${}_4$

Cited by in corpus (1)

• Universal scaling of the critical temperature and the strange-metal scattering rate in unconventional superconductors