Analytical calculation of the Peierls-Nabarro barriers for the Remoissenet-Peyrard substrate potential.
We derive analytically the pinning potential and the pinning barrier of kinks due to discreteness of lattices for the Remoissenet-Peyrard substrate potential by means of the residue method. The theoretical analysis in the low discreteness effect regime is compared in detail with numerical results of Peyrard and Remoissenet [Phys. Rev. B 26, 2886 (1982)], yielding a very satisfactory agreement.
Yemélé
David
D
Laboratoire de Mécanique, Faculté des Sciences, Université de Yaoundé I, BP 812, Yaoundé, Cameroun.
Kofané
Timoléon C
TC