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Spin dynamics in the high-field phase of quantum-criticalS =1/2 TlCuCl3

✍ Scribed by Ch. Rüegg; N. Cavadini; A. Furrer; K. Krämer; H.U. Güdel; P. Vorderwisch; H. Mutka


Publisher
Springer
Year
2002
Tongue
English
Weight
128 KB
Volume
74
Category
Article
ISSN
1432-0630

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✍ M.E.S. Nunes; J.A. Plascak; J. Florencio 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 281 KB

We investigate the Hamiltonian dynamics of two low-dimensional quantum spin systems in a random ÿeld, at the inÿnite-temperature limit: the XY chain and the two-leg XY ladder with interchain Ising interactions. We determine the longitudinal spin autocorrelation functions of the spin-1 2 XY chain and