Anomalous sliding friction and peak effect near the flux lattice melting transition

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© 2000 American Physical Society (APS). http://www.aps.org
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2000
Major/Subject
Mcode
Degree programme
Language
en
Pages
11834-11837
Series
Physical Review B, Volume 62, Issue 17
Abstract
Recent experiments have revealed a giant “peak effect” in ultrapure high Tc superconductors. Moreover, the data show that the peak effect coincides exactly with the melting transition of the underlying flux lattice. In this work, we show using dynamical scaling arguments that the friction due to the pinning centers acting on the flux lattice develops a singularity near a continuous phase transition and can diverge for many systems. The magnitude of the nonlinear sliding friction of the flux lattice scales with this atomistic friction. Thus, the nonlinear conductance should diverge for a true continuous transition in the flux lattice or peak at a weakly first-order transition or for systems of finite size.
Description
Keywords
flux lattices, pinning centers, transition
Other note
Citation
Granato, E. & Ala-Nissilä, Tapio & Ying, S. C. 2000. Anomalous sliding friction and peak effect near the flux lattice melting transition. Physical Review B. Volume 62, Issue 17. P. 11834-11837. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.62.11834.