Chin. Phys. Lett.  2000, Vol. 17 Issue (8): 552-554    DOI:
Original Articles |
Phase Transition of Spin-Peierls Systems with Impurities
XU Bo-Wei;DING Guo-Hui;YE Fei
Department of Physics, Shanghai Jiao Tong University, Shanghai 200030
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XU Bo-Wei, DING Guo-Hui, YE Fei 2000 Chin. Phys. Lett. 17 552-554
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Abstract The quasi-one-dimensional spin-Peierls(SP) systems with impurities are studied in their bosonized form. The spins of the dimerized state are bounded into singlets with an SP gap, while the impurities of doped systems will induce fluctuations of the coupling strength between the spins at different sites and break some pairs of spin singlets. The doping suppresses the dimerized SP state and induces a Kosterlitz-Thouless phase transition from the dimerized state into the undimerized one.
Keywords: 05.70.Fh      64.60.-i      75.10.Jm      76.30.Da     
Published: 01 August 2000
PACS:  05.70.Fh (Phase transitions: general studies)  
  64.60.-i (General studies of phase transitions)  
  75.10.Jm (Quantized spin models, including quantum spin frustration)  
  76.30.Da (Ions and impurities: general)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2000/V17/I8/0552
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