Knowledge Management System of Institute of Theoretical Physics, CAS
Li Liang-Sheng; Li Li ; Chen Xiao-Song; Li, LS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
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| Characterization of Phase Transition in Heisenberg Fluids from Density Functional Theory | |
| Source Publication | COMMUNICATIONS IN THEORETICAL PHYSICS
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| Keyword | Order-disorder Transition Liquid-vapor Interface Monte-carlo-simulation Neutral Hard-spheres Dipolar Fluids Model Instability Equation Diagram |
| Abstract | The phase transition of Heisenberg fluid has been investigated with the density functional theory in mean-field approximation (MF). The matrix of the second derivatives of the grand canonical potential Omega with respect to the particle density fluctuations and the magnetization fluctuations has been investigated and diagonalized. The smallest eigenvalue being 0 signalizes the phase instability and the related eigenvector characterizes this phase transition. We find a Curie line where the order parameter is pure magnetization and a spinodal where the order parameter is a mixture of particle density and magnetization. Along the spinodal, the character of phase in stability changes continuously from predominant condensation to predominant ferromagnetic phase transition with the decrease of total density. The spinodal meets the Curie line at the critical end point with the reduced density rho* = rho sigma(3) = 0.224 and the reduced temperature T* = kT/epsilon = 1.87 (sigma is the diameter of Heisenberg hard sphere and epsilon is the coupling constant). |
| 2009 | |
| ISSN | 0253-6102 |
| Volume | 51Issue:2Pages:287-292 |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | National Natural Science Foundation of China[10325418] ; National Natural Science Foundation of China[10325418] ; National Natural Science Foundation of China[10325418] ; National Natural Science Foundation of China[10325418] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/5396 |
| Collection | SCI期刊论文 |
| Corresponding Author | Li, LS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Li Liang-Sheng,Li Li,Chen Xiao-Song,et al. Characterization of Phase Transition in Heisenberg Fluids from Density Functional Theory[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2009,51(2):287-292. |
| APA | Li Liang-Sheng,Li Li,Chen Xiao-Song,&Li, LS , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.(2009).Characterization of Phase Transition in Heisenberg Fluids from Density Functional Theory.COMMUNICATIONS IN THEORETICAL PHYSICS,51(2),287-292. |
| MLA | Li Liang-Sheng,et al."Characterization of Phase Transition in Heisenberg Fluids from Density Functional Theory".COMMUNICATIONS IN THEORETICAL PHYSICS 51.2(2009):287-292. |
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