New spin injection scheme based on spin gapless semiconductors: A first-principles study G. Z. Xu, X. M. Zhang, Z. P. Hou, Y. Wang, E. K. Liu, X. K. Xi, S. G. Wang, W. Q. Wang, H. Z. Luo, W. H. Wang and G. H. Wu EPL, 111 6 (2015) 68003 Published online: 02 October 2015 DOI: 10.1209/0295-5075/111/68003