%0 Book Section %1 statphys23_0281 %A Maksimov, I.L. %A Telezhnikov, A.V. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K dependence dislocation mobility statphys23 temperature threshold topic-2 %T Temperature-Dependent Dislocation Mobility Threshold %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=281 %X Temperature dependence of a dislocation mobility threshold of the Frenkel-Kontorova crystal is investigated on the basis of a Born-Matsubara method. This variational method is based in the analysis of the system free-Gibbs energy in the framework of the ensemble of statistically independent harmonic oscillators of the Einstein-type frequencies, which are to be determined from the variational procedure. Employing this powerful method we obtained a temperature/force dependent dislocation mobility threshold. It is ascertained that the constant activation energy curves (the isoenergy curves) are practically equivalent in the reduced coordinates. It is revealed that the dislocation depinning barrier demonstrates a power-law dependence near the mobility threshold. Such a feature confirms the universality of the dislocation depinning process.

@incollection{statphys23_0281, abstract = {Temperature dependence of a dislocation mobility threshold of the Frenkel-Kontorova crystal is investigated on the basis of a Born-Matsubara method. This variational method is based in the analysis of the system free-Gibbs energy in the framework of the ensemble of statistically independent harmonic oscillators of the Einstein-type frequencies, which are to be determined from the variational procedure. Employing this powerful method we obtained a temperature/force dependent dislocation mobility threshold. It is ascertained that the constant activation energy curves (the isoenergy curves) are practically equivalent in the reduced coordinates. It is revealed that the dislocation depinning barrier demonstrates a power-law dependence near the mobility threshold. Such a feature confirms the universality of the dislocation depinning process.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Maksimov, I.L. and Telezhnikov, A.V.}, biburl = {https://www.bibsonomy.org/bibtex/22ea49772a1afc52077447b75e2a631d9/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {014f48d73e17972c25bf3ce5f7f07dad}, intrahash = {2ea49772a1afc52077447b75e2a631d9}, keywords = {dependence dislocation mobility statphys23 temperature threshold topic-2}, month = {9-13 July}, timestamp = {2007-06-20T10:16:16.000+0200}, title = {Temperature-Dependent Dislocation Mobility Threshold}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=281}, year = 2007 }