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Published on: April 10, 2018
First-principles study of NO adsorbed Ni(100) surface
1Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
Journal of Nanoscience and Nanotechnology
|December 9, 2010
Summary
Nitric oxide (NO) molecules chemisorb on Nickel (Ni) surfaces, significantly reducing the magnetic properties of both the Ni and NO. This magnetic quenching is due to spin-dependent electronic interactions during adsorption.
Area of Science:
- Surface Science
- Computational Materials Science
- Quantum Chemistry
Background:
- Understanding molecule-surface interactions is crucial for catalysis and materials design.
- Nitric oxide (NO) adsorption on transition metals influences surface magnetism and reactivity.
- Nickel (Ni) surfaces are widely studied for their catalytic and magnetic properties.
Purpose of the Study:
- To investigate the geometric, electronic, and magnetic properties of NO molecules adsorbed on a Ni(100) surface.
- To elucidate the mechanism behind the magnetic moment suppression upon NO adsorption.
- To provide insights into the electronic structure changes at the interface.
Main Methods:
- First-principles calculations based on Density Functional Theory (DFT).
- Simulation of NO adsorption at various coverages (0.125 ML and 0.5 ML).
- Analysis of spin-resolved differential charge density maps.
Main Results:
- NO molecules chemisorb at hollow sites in an upright configuration on Ni(100).
- Significant suppression of the magnetic moment for surface Ni atoms and near-quenching for NO.
- Spin-dependent backdonation explains the observed magnetic moment reduction.
Conclusions:
- The adsorption of NO on Ni(100) leads to substantial changes in electronic and magnetic properties.
- DFT calculations accurately predict the adsorption behavior and magnetic quenching.
- Understanding spin-resolved electronic states is key to explaining molecule-surface magnetic interactions.
