Effect of damping on kink ratchets in the Klein–Gordon lattice free of the Peierls–Nabarro potential

Autor:	Yuri V. Bebikhov, Sergey V. Suchkov, Avinash Khare, Sergey V. Dmitriev
Rok vydání:	2010
Předmět:	Physics symbols.namesake Drift velocity Condensed matter physics Lattice (order) Ratchet symbols General Physics and Astronomy Nonlinear Sciences::Pattern Formation and Solitons Klein–Gordon equation
Zdroj:	Physics Letters A. 374:1477-1480
ISSN:	0375-9601
Popis:	Ratchet of kink under harmonic ac driving force in the discrete Klein-Gordon model with asymmetric potential and with a damping term is investigated numerically. A particular feature of the considered discrete model is that supported kinks are free of the Peierls-Nabarro potential (PNp). It is demonstrated that, depending on the strength of damping, the drift velocity of the kink can be positive (weak damping) or negative (strong damping). The absence of PNp results in a weak dependence of kink drift velocity on the discreteness parameter.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::70377886ee8a6617619f676057f0f1cf https://doi.org/10.1016/j.physleta.2010.01.044 Zobrazit plný text záznamu Full Text from ScienceDirect