Magnetic Field Effect on Static Antiferromagnetism in Electron-Doped Superconductor Pr$_{1-x}$LaCe$_x$CuO$_4$ ($x$=0.11 and 0.15)

Details Magnetic Field Effect on Static Antiferromagnetism in Electron-Doped Superconductor Pr$_{1-x}$LaCe$_x$CuO$_4$ ($x$=0.11 and 0.15) Magnetic Field Effect on Static Antiferromagnetism in Electron-Doped Superconductor Pr$_{1-x}$LaCe$_x$CuO$_4$ ($x$=0.11 and 0.15)

2003-11-12

arxiv.org/abs/cond-mat/0311269v2

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.147003

Effects of magnetic fields (applied along the c-axis) on static spin correlation were studied for the electron-doped superconductors Pr$_{1-x}$LaCe$_{x}$CuO$_4$ with $x$=0.11 ($T_c$=26 K) and $x$=0.15 ($T_c$=16 K) by neutron scattering measurements. In the $x$=0.11 sample located near the antiferromagnetic(AF) and superconducting phase boundary, the field dependence of both the magnetic intensity at T=3 K and the onset temperature of the magnetic order exhibits a peak at $\sim$5 T. In contrast, in the overdoped $x$=0.15 sample a static AF order is neither observed at zero-field nor induced by the field up to 8.5 T. Difference and similarity of the field effect between the hole- and electron-doped high-$T_c$ cuprates are discussed.

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