Effect of coupling displacement on thermal current of Frenkel-Kontorova lattices Jianqiang Zhang, Xiuhua Chen, Ruyin Chen, Linru Nie and Zhigang Zheng Eur. Phys. J. B, 87 6 (2014) 122 Published online: 02 June 2014 DOI: 10.1140/epjb/e2014-41107-5