Volume 78, Number 1, April 2007
Article Number 10004
Number of page(s) 5
Section General
Published online 13 March 2007
EPL, 78 (2007) 10004
DOI: 10.1209/0295-5075/78/10004

Evidence for moving breathers in a layered crystal insulator at 300 K

F. M. Russell and J. C. Eilbeck

Department of Mathematics and the Maxwell Institute for Mathematical Sciences, Heriot-Watt University - Riccarton, Edinburgh, EH14 4AS, UK

received 3 December 2006; accepted in final form 12 February 2007; published April 2007
published online 13 March 2007

We report the ejection of atoms at a crystal surface caused by energetic breathers which have travelled more than 107 unit cells in atomic chain directions. The breathers were created by bombardment of a crystal face with heavy ions. This effect was observed at 300 K in the layered crystal muscovite, which has linear chains of atoms for which the surrounding lattice has C2 symmetry. The experimental techniques described could be used to study breathers in other materials and configurations.

05.45.Yv - Solitons.
43.25.+y - Nonlinear acoustics.
61.80.Lj - Atom and molecule irradiation effects.

© Europhysics Letters Association 2007