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Flow equations and the Ruderman-Kittel-Kasuya-Yosida interaction |
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| Authors: | J. Stein |
| Affiliation: | Physikalisches Institut, Universit?t Bayreuth, 95440 Bayreuth, Germany, DE Institut für Theoretische Physik, Universit?t zu K?ln, 50937 K?ln, Germany, DE |
| Abstract: | In the past different models for the magnetic salt vanadyl pyrophosphate (VO)2P2O7 were discussed. Neither a spin ladder nor an alternating chain are capable to describe recently measured magnetic excitations. In this paper we propose a 2D model that fits better to experimental observations. Received: 29 May 1998 / Received in final form: 25 September 1998 / Accepted: 30 September 1998 |
| Keywords: | PACS. 75.10.-b General theory and models of magnetic ordering - 75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies synchroton-source X-ray scattering etc.) - 75.40.Mg Numerical simulation studies |
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