Magnetic excitations in the stripe phase of high-Tc superconductors

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:290

Article; Proceedings Paper

Uhrig, GS ; Schmidt, KP ; Grüninger, M

关键词: superconductors;    high T-c;    neutron scattering;    inelastic;    antiferromagnetism;    quantum;    spin dynamics;   

DOI  :  10.1016/j.jmmm.2004.11.230

来源: Elsevier

【 摘 要 】

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 La15/8Ba1/8CuO4 (no spin gap) and YBa2Cu3O6.6 (gapped). The signature of quasi-one-dimensional spin physics in a single-domain stripe phase is predicted. (c) 2004 Elsevier B.V. All rights reserved.

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