FLUCTUATION-INDUCED COUPLINGS BETWEEN DEFECT LINES OR PARTICLE CHAINS

被引:102
作者
HALSEY, TC
TOOR, W
机构
[1] UNIV CHICAGO, DEPT PHYS, CHICAGO, IL 60637 USA
[2] BOSTON UNIV, DEPT PHYS, BOSTON, MA 02215 USA
关键词
ELECTRORHEOLOGY; FLUX LATTICE; VANDERWAALS FORCES;
D O I
10.1007/BF01014374
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
One-dimensional structures such as defect lines or chains of dipolar particles are generally subject to strong Landau-Peierls thermal fluctuations. Coupling between these fluctuations in parallel lines may lead to an attractive force, analogous to the London force, or to a repulsive force of entropic origin. We analyze these forces for chains of electric dipoles and for flux lines in isotropic superconductors. In the first case the force is attractive, and can significantly change the Hamaker constant, which governs the attraction between colloidal particles. In the second case, over much of the magnetic field-temperature phase diagram the force is repulsive, and dominates over the direct repulsive interaction between flux lines.
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页码:1257 / 1281
页数:25
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