Thermodynamic properties of the charge-density-wave transition in potasium blue brone |
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| Authors: | Shi Jing Xia Haibo Tang Wufang Tian Decheng Qing Xiaokui Chen Hong |
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| Institution: | (1) Department of Physics, Wuhan University, 430072 Wuhan, China;(2) Pohl Institute of Solid State Physics, Tongji University, 200092 Shanghai, China |
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| Abstract: | Thermodynamic properties of the charge-density-wave (CDW) transition in potassium blue bronze K0.3MoO3 are investigated by the measurement of specific heat. A second-order phase transition is observed at 177.5 K. The specific
heat jump, and enthalpy and entropy changes associated with the transition are estimated. The results suggest that the lattice
plays an important role in thermodynamics for this compound. Analysis of the data near CDW transition shows that width of
critical region is about 6 K and the critical behavior belongs to the universality class of the three-dimensional XY model.
Supported by the National Nature Science Foundation of China & Youth Foundation of Science of Shanghai
Shi Jing: born in Mar. 1956, Accociate professor |
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| Keywords: | thermodynamics charge-density-wave |
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