Magnetic Response of Pr1-xLaCexCuO4 in Comparison with Hole-Doped Cuprates

Alexei Sherman

doi:10.4028/www.scientific.net/SSP.215.11

Paper Titles

Phase Transitions in the Antiferromagnetic Heisenberg Model on a Triangular Lattice with the Next-Nearest Neighbor Interactions
p.3

Magnetic Response of Pr_1-xLaCe_xCuO₄ in Comparison with Hole-Doped Cuprates
p.11

Ising Antiferromagnet with Nearest-Neighbor and Next-Nearest-Neighbor Interactions on a Square Lattice
p.17

Fundamental Limitations of Half-Metallicity in Spintronic Materials
p.22

Electronic Structure and Magnetic Properties of Iron Doped TiO₂ (Rutile): XPS Measurements and CPA Calculations
p.28

Statistical and Multifractal Properties of Barkhausen Jumps in Exchange-Coupled Antiferromagnetic/Ferromagnetic Bilayers
p.35

Modulated Nanomagnetics
p.41

Electronic Structure of Nonstoichiometric LaMnO_3-x Calculated in the Coherent Potential Approximation
p.46

HomeSolid State PhenomenaSolid State Phenomena Vol. 215Magnetic Response of Pr1-xLaCexCuO4 in Comparison...

Magnetic Response of Pr_1-xLaCe_xCuO₄ in Comparison with Hole-Doped Cuprates

Abstract:

The magnetic susceptibility of the optimally doped Pr_1-xLaCe_xCuO₄ in the superconducting state is calculated using the t-J model of Cu-O planes, the Mori projection operator technique, and the dispersion of electron bands derived from photoemission experiments. The electron band folding across the antiferromagnetic Brillouin zone border, which is inherent in the crystal, leads to a commensurate low-frequency response. The same band folding causes the appearance of a supplementary spin-excitation branch, which coexists with usual spin excitations. This coexistence can explain two maxima observed in the frequency dependence of the susceptibility. The two nested spin-excitation branches lead to a comb of closely spaced peaks in momentum cuts, which presumably are not resolved in experiment, being seen as a broad commensurate peak up to 100 meV. Reasons for differences in magnetic responses of electron- and hole-doped cuprates are discussed.

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Solid State Phenomena (Volume 215)

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11-16

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https://doi.org/10.4028/www.scientific.net/SSP.215.11

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Online since:

April 2014

Authors:

Alexei Sherman

Keywords:

Magnetic Property, n-Type Cuprates, Supplementary Spin-Excitationbranch

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