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Title
Japanese: 
English:DMFT Study for Valence Fluctuations in the Extended Periodic Anderson Model 
Author
Japanese: 新崎 龍, 那須 譲治, 古賀 昌久.  
English: Ryu Shinzaki, Joji Nasu, Akihisa Koga.  
Language English 
Journal/Book name
Japanese: 
English:Journal of Physics: Conference Series 
Volume, Number, Page Vol. 683        pp. 012041
Published date Feb. 2016 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://arxiv.org/abs/1510.04788
http://stacks.iop.org/1742-6596/683/i=1/a=012041?key=crossref.5ea96ca45f039055714ec499802c0ed0
 
DOI https://doi.org/10.1088/1742-6596/683/1/012041
Abstract We study valence fluctuations at finite temperatures in the extended periodic Anderson model, where the Coulomb interaction between conduction and localized $f$-electrons is taken into account, using dynamical mean-field theory combined with the continuous-time quantum Monte Carlo (CT-QMC) method. The valence transition with the hysteresis is clearly found, indicating the first-order phase transition between the Kondo and mixed-valence states. We demonstrate that spin correlation rapidly develops when the system approaches the valence transition point. The comparison of the impurity solvers, %: the CT-QMC, non-crossing approximation, and one-crossing approximation, is also addressed.

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