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Incommensurate Spin Dynamics in High Temperature Superconductor of Optimally Doped YBa2Cu3O7

M. Arai·T. Nishijima·Y. Endoh·A. W. Garrett·S. Tajima·K. Tomimoto·Y. Shiohara·C. D. Frost·S. M. Bennington
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Abstract

The spin dynamics of an optimally doped YBa2Cu3O7 (Tc = 93 K) crystal array have been investigated in a wide range of momentum and energy (Q - E) space using the time-of-flight neutron scattering method. Incommensurate spin modulation in Q is a characteristic feature, as it is in the under-doped YBa2Cu3O6.7 with a different incommensurability. A linear relationship between the incommensurability and Tc is proposed. Along with the discovery of the same incommensurability in under-doped La2-ySryCuO4, it may be a generic characteristic of the high-Tc oxide superconductor.

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M. Arai, T. Nishijima, Y. Endoh, A. W. Garrett, S. Tajima, K. Tomimoto, Y. Shiohara, C. D. Frost, S. M. Bennington. 1999-12-14. Incommensurate Spin Dynamics in High Temperature Superconductor of Optimally Doped YBa2Cu3O7. https://arxiv.org/abs/cond-mat/9912233

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