Resonant two-magnon Raman scattering in cuprate antiferromagnetic insulators
G. Blumberg, P. Abbamonte, M. V. Klein, W. C. Lee, D. M. Ginsberg, L. L. Miller, A. Zibold
DOI 10.1103/PhysRevB.53.R11930 · Physical Review B
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Abstract
We present results of low-temperature two-magnon resonance Raman excitation profile measurements for single-layer Sr2CuO2Cl2 and bilayer YBa2Cu3O6+δ antiferromagnets over the excitation region from 1.65 to 3.05 eV. These data reveal composite structure of the two-magnon line shape and strong nonmonotic dependence of the scattering intensity on excitation energy. We analyze these data using the triple resonance theory of Chubukov and Frenkel [Phys. Rev. Lett. 74, 3057 (1995)] and deduce information about magnetic interaction and band parameters in these materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2CuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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