Phys. Rev. Lett. 99, 206101 (2007) [4 pages]Static Friction on the Fly: Velocity Depinning Transitions of Lubricants in MotionSee Also: Publisher's Note Received 4 April 2007; published 12 November 2007; publisher error corrected 14 November 2007 The dragging velocity of a model solid lubricant confined between sliding periodic substrates exhibits a phase transition between two regimes, respectively, with quantized and with continuous lubricant center-of-mass velocity. The transition, occurring for increasing external driving force Fext acting on the lubricant, displays a large hysteresis, and has the features of depinning transitions in static friction, only taking place on the fly. Although different in nature, this phenomenon appears isomorphic to a static Aubry depinning transition in a Frenkel-Kontorova model, the role of particles now taken by the moving kinks of the lubricant-substrate interface. We suggest a possible realization in 2D optical lattice experiments. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.206101
DOI:
10.1103/PhysRevLett.99.206101
PACS:
68.35.Af, 05.45.Yv, 62.25.+g, 81.40.Pq
See AlsoPublisher's Note: A. Vanossi, N. Manini, F. Caruso, G. E. Santoro, and E. Tosatti, Publisher’s Note: Static Friction on the Fly: Velocity Depinning Transitions of Lubricants in Motion [Phys. Rev. Lett. 99, 206101 (2007)], Phys. Rev. Lett. 99, 229901 (2007). |
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