A theoretical study of spin-polarized transport properties of planar four-coordinate Fe complexes

• Main Authors: Huang, Jing, Wang, Weiyi, Yang, Shangfeng, Su, Haibin, Li, Qunxiang, Yang, Jinlong
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/96121; http://hdl.handle.net/10220/10810
• Institution: Nanyang Technological University

We present a first-principles study of the spin-polarized transport properties of three planar four-coordinate Fe complexes with different noninnocent ligands sandwiched between two armchair (5,5) single-walled carbon nanotube (SWCNT) electrodes. Theoretical results clearly reveal that the current of the spin-up electrons through three examined molecular junctions is significant larger than that of the spin-down electrons. The low bias conductance is determined by the tail of transmission peak coming from the perturbed lowest unoccupied molecular orbital of the spin-up electrons. The high spin-filter efficiencies (up to 99.0%) are predicted for three planar four-coordinate Fe complexes coupled to SWCNTs.