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Local Melting and Drag for a Particle Driven Through a Colloidal Crystal | | C. Reichhardt
; C.J. Olson Reichahrdt
; | | Date: |
3 Oct 2003 | | Journal: | Phys. Rev. Lett. 92, 108301 (2004) | | Subject: | Soft Condensed Matter; Superconductivity | cond-mat.soft cond-mat.supr-con | | Abstract: | We numerically investigate a colloidal particle driven through a colloidal crystal as a function of temperature. When the charge of the driven particle is larger or comparable to that of the colloids comprising the crystal, a local melting can occur, characterized by defect generation in the lattice surrounding the driven particle. The generation of the defects is accompanied by an increase in the drag force on the driven particle, as well as large noise fluctuations. We discuss the similarities of these results to the peak effect phenomena observed for vortices in superconductors. | | Source: | arXiv, cond-mat/0310052 | | Services: | Forum | Review | PDF | Favorites | |
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