Open AccessKlein tunneling in spin-orbit coupled Bose-Einstein condensate scattered by cusp barrier
Author(s) -
Zhi Li,
Haiqing Cao
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.110306
Subject(s) - physics , quantum tunnelling , bose–einstein condensate , scattering , rectangular potential barrier , cusp (singularity) , transmission coefficient , condensed matter physics , oscillation (cell signaling) , amplitude , spin (aerodynamics) , quantum mechanics , transmission (telecommunications) , geometry , mathematics , engineering , electrical engineering , thermodynamics , biology , genetics
The scattering process when spin-orbit coupled Bose-Einstein condensate gets through cusp barrier is numerically simulated by adopting time-split spectrum method; the Klein tunneling phenomena exist in the scattering process. The regions of Klein block and Klein tunneling will appear at higher barrier height as compared to the scattering process on getting through Gaussian barrier. In the Klein tunneling region, the transmission coefficient oscillates with the barrier height, and the oscillation amplitude decreases with increasing barrier height. Besides, the effect of non-linear atomic interaction has been discussed for different barrier heights as well.