Journal article ยท Preprint article
Conduction Mechanism in a Molecular Hydrogen Contact
We present first principles calculations for the conductance of a hydrogen molecule bridging a pair of Pt electrodes. The transmission function has a wide plateau with Tapproximate to1 which extends across the Fermi level and indicates the existence of a single, robust conductance channel with nearly perfect transmission.
Through a detailed Wannier function analysis we show that the H-2 bonding state is not involved in the transport and that the plateau forms due to strong hybridization between the H-2 antibonding state and states on the adjacent Pt atoms. The Wannier functions furthermore allow us to derive a resonant-level model for the system with all parameters determined from the fully self-consistent Kohn-Sham Hamiltonian.
Language: | English |
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Year: | 2005 |
Pages: | 036807 |
ISSN: | 10797114 and 00319007 |
Types: | Journal article and Preprint article |
DOI: | 10.1103/PhysRevLett.94.036807 |
ORCIDs: | Thygesen, Kristian Sommer and Jacobsen, Karsten Wedel |