Spurious magnetism in high-Tc superconductor

被引：0
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作者：
P. K. Mang
S. Larochelle
M. Greven
机构：
[1] Stanford University,Department of Applied Physics
[2] Stanford,Department of Physics
[3] Stanford University,undefined
[4] Stanford,undefined
[5] Stanford Synchrotron Radiation Laboratory,undefined
[6] Stanford University,undefined
[7] Stanford,undefined
来源：
Nature | 2003年 / 426卷
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摘要：
One challenge in condensed-matter physics is to unravel the interplay between magnetism and superconductivity in copper oxides with a high critical temperature (Tc). Kang et al.1 claim to have revealed a quantum phase transition from the superconducting to an antiferromagnetic state in the electron-doped material Nd2−xCexCuO4 (NCCO) based on the observation of magnetic-field-induced neutron-scattering intensity at (1/2,1/2,0), (1/2,0,0) and related reflections. Here we argue that the observed magnetic intensity is due to a secondary phase of (Nd,Ce)2O3. We therefore contend that the effect is spurious and not intrinsic to superconducting NCCO.
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页码：139 / 140
页数：1
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