Soliton-impurity interactions in a weak ac drive

L. Zhang, L. Huang, and X. M. Qiu
Phys. Rev. B 47, 1088 – Published 1 January 1993
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Abstract

In the present paper, soliton-impurity interactions in a weak ac drive are semianalytically and fully numerically studied. It is found that a soliton with initial velocity V0=0 in a weak ac drive can overcome an attractive impurity potential. A physical interpretation of this phenomenon is given: First, the impurity mode is excited and amplified by the weak ac drive, then the soliton gains, through the strong soliton-impurity interactions, kinetic energy to overcome the impurity potential and finally escapes.

  • Received 24 January 1992

DOI:https://doi.org/10.1103/PhysRevB.47.1088

©1993 American Physical Society

Authors & Affiliations

L. Zhang, L. Huang, and X. M. Qiu

  • Chinese Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080, People’s Republic of China
  • Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People’s Republic of China

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Vol. 47, Iss. 2 — 1 January 1993

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