Phase diagram of the spin extended model |
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| Authors: | I. Titvinidze G.I. Japaridze |
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| Affiliation: | (1) Andronikashvili Institute of Physics, Georgian Academy of Sciences Tamarashvili str. 6, 380077, Tbilisi, Georgia, GE |
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| Abstract: | The quantum phase transition in the ground state of the extended spin S = 1/2 XY model has been studied in detail. Using the exact solution of the model the low temperature thermodynamics, as well as the ground state phase diagram of the model in the presence of applied uniform and/or staggered magnetic field are discussed. Received 29 November 2002 / Received in final form 24 February 2003 Published online 11 April 2003 RID="a" ID="a"e-mail: japa@iph.hepi.edu.ge |
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| Keywords: | PACS. 71.27.+a Strongly correlated electron systems heavy fermions – 75.10.Jm Quantized spin models |
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