paper

Evidence for Antiferromagnetic Order in La $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ from Angular Magnetoresistance Measurements

arXiv:0906.2974 · doi:10.1103/PhysRevB.80.012501

Abstract

We investigated the in-plane angular magnetoresistivity (AMR) of -phase La $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ (LCCO) thin films () fabricated by a pulsed laser deposition technique. The in-plane AMR with $H ∥ ab$ shows a twofold symmetry instead of the fourfold behavior found in other electron-doped cuprates such as PrCe $_{x}$ CuO $_{4}$ and Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ . The twofold AMR disappears above a certain temperature, $T_{D}$ . The $T_{D} (x)$ is well above $T_{c} (x)$ for $x = 0.06$ ( $\sim 110$ K), and decreases with increasing doping, until it is no longer observed above $T_{c} (x)$ at $x = 0.15$ . This twofold AMR below $T_{D} (x)$ is suggested to originate from an antiferromagnetic or spin density wave order.

to be published in Phys. Rev. B, Vol. 80 (2009)

Evidence for Antiferromagnetic Order in La2−x​Cex​CuO4​ from Angular Magnetoresistance Measurements

Abstract

Evidence for Antiferromagnetic Order in La $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ from Angular Magnetoresistance Measurements