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Signatures of a quantum dynamical phase transition in a three-spin system in presence of a spin environment

✍ Scribed by Gonzalo A. Álvarez; Patricia R. Levstein; Horacio M. Pastawski


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
185 KB
Volume
398
Category
Article
ISSN
0921-4526

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✍ F. Moussa; M. Ain; B. Hennion 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 236 KB

Spin dynamics of a 2D Heisenberg ferromagnet of K>CuF, with easy plane anisotropy have been investigated with high resolution inelastic neutron scattering above T,. In addition to spin waves, a central peak has been measured and interpreted in terms of the dynamics of free spin vortices