Absence of an isotope effect in the magnetic resonance in high-Tc superconductors

S. Pailhès; P. Bourges; Y. Sidis; C. Bernhard; B. Keimer; C. T. Lin; J. L. Tallon

doi:10.1103/PhysRevB.71.220507

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Absence of an isotope effect in the magnetic resonance in high-Tc superconductors

S. Pailhès, P. Bourges, Y. Sidis, C. Bernhard, B. Keimer, C. T. Lin, J. L. Tallon

DOI 10.1103/PhysRevB.71.220507 · Physical Review B

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Abstract

An inelastic neutron-scattering experiment has been performed in the high-temperature superconductor YBa2Cu3O6.89 to search for an oxygen-isotope shift of the well-known magnetic-resonance mode at 41 meV. Contrary to a recent prediction [I. Eremin et al., Phys. Rev. B 69, 094517 (2004)], a negligible shift (at best ⩽+0.2meV) of the resonance energy is observed upon oxygen isotope substitution (O16→O18). This suggests a negligible spin-phonon interaction in the high-Tc cuprates at optimal doping.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.89 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90	Pressure not reported	onset
YBa2Cu3O6.89 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	88.8	Pressure not reported	onset
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown