Gigantic maximum of nanoscale noncontact friction

Kohta Saitoh, Kenichi Hayashi, Yoshiyuki Shibayama, Keiya Shirahama

研究成果: Article査読

23 被引用数 (Scopus)

抄録

We report measurements of noncontact friction between surfaces of NbSe 2 and SrTiO3 and a sharp Pt-Ir tip that is oscillated laterally by a quartz tuning fork cantilever. At 4.2 K, the friction coefficients on both the metallic and insulating materials show a giant maximum at the tip-surface distance of several nanometers. The maximum is strongly correlated with an increase in the spring constant of the cantilever. These features can be understood phenomenologically by a distance-dependent relaxation mechanism with distributed time scales.

本文言語English
論文番号236103
ジャーナルPhysical review letters
105
23
DOI
出版ステータスPublished - 2010 12 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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