Pinned-to-sliding transition and structural crossovers for helically confined charges
| Autor: | Alexandra V. Zampetaki, Peter Schmelcher, J. Stockhofe |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Coupling Condensed matter physics FOS: Physical sciences Non-equilibrium thermodynamics Pattern Formation and Solitons (nlin.PS) Radius Condensed Matter - Soft Condensed Matter Nonlinear Sciences - Pattern Formation and Solitons 01 natural sciences Charged particle 010305 fluids & plasmas Crystal Classical mechanics 0103 physical sciences Helix Soft Condensed Matter (cond-mat.soft) Particle Center of mass 010306 general physics |
| Zdroj: | Physical Review E. 95 |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.95.022205 |
| Popis: | We explore the non-equilibrium dissipative dynamics of a system of identical charged particles trapped on a closed helix. The particles are subject to an external force accelerating them along the underlying structure. The effective interactions between the charges induce a coupling of the center-of-mass to the relative motion which in turn gives rise to a pinned-to-sliding transition with increasing magnitude of the external force. In the sliding regime we observe an Ohmic behaviour signified by a constant mobility. Within the same regime a structural transition of the helical particle chain takes place with increasing the helix radius leading to a global change of the crystalline arrangement. The resulting crystal is characterized by the existence of multiple defects whose number increases with the helix radius. 15 pages, 12 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|