Sublattice magnetization in the antiferromagnetic parent compounds of cuprate high-Tc superconductors

M. Matsumura; F. Raffa; D. Brinkmann

doi:10.1103/PhysRevB.60.6285

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Sublattice magnetization in the antiferromagnetic parent compounds of cuprate high-Tc superconductors

M. Matsumura, F. Raffa, D. Brinkmann

DOI 10.1103/PhysRevB.60.6285 · Physical Review B

T1

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Abstract

We have calculated the temperature dependence of the sublattice magnetization, M(T), in Ca(Sr)CuO2 within the framework of the spin-wave model applied to a quasi-two-dimensional Heisenberg antiferomagnet. We found that, below about TN/2, the relative decrease of M(T) follows a power law: [M(0)−M(T)]/M(0)=ATn with n∼2. Such a result had already been found for YBa2Cu3O6 and La2CuO4. The change in the magnitude of A in these compounds can be related to the change in their interlayer coupling constants J′.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown