title: Nanoscale friction: kinetic friction of magnetic flux quanta and charge density waves.
abstract: In analogy with the standard macroscopic friction, here we present a comparative study of the friction force felt by moving vortices in superconductors and charge density waves. Using experiments and a model for this data, our observations (1) provide a link between friction at the micro- and macroscopic scales, (2) explain the roundness of the static-kinetic friction transition in terms of thermal fluctuations, particle interactions, and system size (critical-phenomena view), and (3) explain the crossing of the kinetic friction F(k) versus velocity V for our pristine (high density of very weak defects) and our irradiated samples (with lower density of deeper pinning defects).
authors.affiliation: Department of Basic Science, University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Maeda
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
authors.forename: H
authors.initials: H
authors.lastname: Kitano
authors.forename: Sergey
authors.initials: S
authors.lastname: Savel'ev
authors.forename: S
authors.initials: S
authors.lastname: Okayasu
authors.forename: I
authors.initials: I
authors.lastname: Tsukada
authors.forename: Franco
authors.initials: F
authors.lastname: Nori