| Issue |
Europhys. Lett.
Volume 72, Number 2, October 2005
|
|
|---|---|---|
| Page(s) | 183 - 189 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2005-10235-7 | |
| Published online | 21 September 2005 | |
Energy flow for soliton ratchets
Max-Planck-Institut für Physik komplexer Systeme Nöthnitzer Str. 38, 01187 Dresden, Germany
Received:
17
May
2005
Accepted:
30
August
2005
We study the mechanism of directed energy transport for soliton ratchets. The energy flow appears due to the progressive motion of a soliton (kink) which is an energy carrier. However, the energy current formed by internal system deformations (the total field momentum) is zero. We show that the energy flow is realized via an inhomogeneous energy exchange between the system and the external ac driving. We also discuss effects of spatial discretization and combination of ac and dc external drivings.
PACS: 05.45.Yv – Solitons / 05.60.-k – Transport processes
© EDP Sciences, 2005
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