%A Shu-Hua Wang,Shuang-Sheng Yang,Huai-Song Zhao,Feng Yuan %T Quasiparticle scattering interference in electron-doped cuprate superconductors %0 Journal Article %D 2015 %J Front. Phys. %J Frontiers of Physics %@ 2095-0462 %R 10.1007/s11467-015-0521-x %P 107405-${article.jieShuYe} %V 10 %N 6 %U {https://journal.hep.com.cn/fop/EN/10.1007/s11467-015-0521-x %8 2015-12-01 %X

By considering the nonmonotonic d-wave gap effect, the energy and momentum dependence of quasiparticle scattering interference is studied in the presence of a single impurity. It is shown that the pattern of the quasiparticle scattering peaks in the full Brillouin zone of electron-doped cuprate superconductors is very different from that in the hole-doped case described by the Octet model. This difference is the result of the nonmonotonic d-wave superconducting gap in the electron-doped case. As the energy increases, the position of the local peaks in the Brillouin zone moves rapidly. In particular, the characteristic peaks of the electron-doped cuprate superconductors appear between the antinodal and nodal directions, unlike in the hole-doped case.