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Luo, L; Chen, XS; Chen, XS (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
Chain formation in a monolayer of dipolar hard spheres under an external field
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Language英语
KeywordNonspherical Particles Fluids Simulation Mixtures Equation Density
AbstractThe phase behavior of a monolayer of dipolar hard spheres under an external field, which makes all dipoles of the monolayer orientate along its direction, is investigated. Using integral equation theory in the reference hypernetted chain (RHNC) approximation we calculate the correlation functions, which are used to obtain the response matrix of grand potential with respect to density fluctuations. The smallest eigenvalue of this response matrix determines the stability of the monolayer. When the smallest eigenvalue approaches zero, the monolayer becomes unstable and the corresponding eigenvector characterizes this instability. At dilute densities, with decreasing temperature the dipoles of the monolayer begin to form chains and simultaneously condensate. At medium and high densities, however, the dipoles of the monolayer have a stronger tendency to form dipolar chains with decreasing temperature and there is no condensation. The part of specific heat related to potential energy is investigated and found to increase sharply near the temperature of dipolar chain formation. This is in accordance with a sharp decrease in potential energy induced by the formation of a dipolar chain.
2011
ISSN1674-7348
Volume54Issue:9Pages:1555-1560
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [10835005] ; National Natural Science Foundation of China [10835005] ; National Natural Science Foundation of China [10835005] ; National Natural Science Foundation of China [10835005]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14285
Collection理论物理所科研产出_SCI论文
Corresponding AuthorChen, XS (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Luo, L,Chen, XS,Chen, XS . Chain formation in a monolayer of dipolar hard spheres under an external field[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2011,54(9):1555-1560.
APA Luo, L,Chen, XS,&Chen, XS .(2011).Chain formation in a monolayer of dipolar hard spheres under an external field.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,54(9),1555-1560.
MLA Luo, L,et al."Chain formation in a monolayer of dipolar hard spheres under an external field".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 54.9(2011):1555-1560.
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