Magnetic Response of Pr1-xLaCexCuO4 in Comparison with Hole-Doped Cuprates
作者： Alexei Sherman
DOI: 10.4028/WWW.SCIENTIFIC.NET/SSP.215.11
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摘要: The magnetic susceptibility of the optimally doped Pr1-xLaCexCuO4 in superconducting state is calculated using t-J model Cu-O planes, Mori projection operator technique, and dispersion electron bands derived from photoemission experiments. band folding across antiferromagnetic Brillouin zone border, which inherent crystal, leads to a commensurate low-frequency response. same causes appearance supplementary spin-excitation branch, coexists with usual spin excitations. This coexistence can explain two maxima observed frequency dependence susceptibility. nested branches lead comb closely spaced peaks momentum cuts, presumably are not resolved experiment, being seen as broad peak up 100 meV. Reasons for differences responses electron- hole-doped cuprates discussed.
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