Controlling the Spin States of FeTBrPP on Au(111).
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36440841.
- Also identified by DOI 10.1021/acsnano.2c09310 and PMC identifier 10711789.
- Licence recorded as CC BY-NC-ND.
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Abstract
Spin-flip excitations of iron porphyrin molecules on Au(111) are investigated with a low-temperature scanning tunneling microscope. The molecules adopt two distinct adsorption configurations on the surface that exhibit different magnetic anisotropy energies. Density functional theory calculations show that the different structures and excitation energies reflect unlike occupations of the Fe 3d levels. We demonstrate that the magnetic anisotropy energy can be controlled by changing the adsorption site, the orientation, or the tip-molecule distance.