Magnetic excitations in the stripe phase of high-T_c superconductors

Details Magnetic excitations in the stripe phase of high-T_c superconductors Magnetic excitations in the stripe phase of high-T_c superconductors

2004-07-25

arxiv.org/abs/cond-mat/0407648v1

J. Mag. Mag. Mater. 290-291, 330 (2005)

Physics

Condensed Matter

Superconductivity

3 pages, 3 figures included, submitted to the proceedings of JEMS 2004

Scientific paper

10.1016/j.jmmm.2004.11.230

The magnetic excitations in the stripe phase of high-T_c superconductors are investigated in a model of spin ladders which are effectively coupled via charged stripes. Starting from the effective single-triplon model for the isolated spin ladder, the quasi-one-dimensional spin system can be described straightforwardly. Very good agreement is obtained with recent neutron scattering data on La_(15/8)Ba_(1/8)CuO_4 (no spin gap) and YBa_2Cu_3O_(6.6) (gapped). The signature of quasi-one-dimensional spin physics in a single-domain stripe phase is predicted.

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