Incommensurate Spin Dynamics in High Temperature Superconductor of Optimally Doped YBa2Cu3O7

Details Incommensurate Spin Dynamics in High Temperature Superconductor of Optimally Doped YBa2Cu3O7 Incommensurate Spin Dynamics in High Temperature Superconductor of Optimally Doped YBa2Cu3O7

1999-12-14

arxiv.org/abs/cond-mat/9912233v1

Physics

Condensed Matter

Superconductivity

5 figures, 1 in 2 parts (6 total files)

Scientific paper

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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