Abstract
AbstractRecent scanning tunneling microscope (STM) experimental studies on transport through CoPc and TBrPP‐Co molecules adsorbed on metallic surfaces have reported several interesting results: (i) a high Kondo temperature as compared to those of adsorbed undressed magnetic atoms, (ii) the Kondo resonance shows up either as a Kondo peak (CoPc) or as a Fano dip (TBrPP‐Co), (iii) the Kondo temperature depends strongly on the molecule conformation and can be manipulated experimentally. Aiming to propose a theoretical framework that may serve to analyze these observations, we first discuss the case of an isolated magnetic atom adsorbed on a metallic surface. Much of the work on this simple case turns out to be of great help in the analysis of the more complex systems. Then, a simple model is proposed that, capturing the main features of the inner structure of the molecule (four lobe orbitals plus a strongly correlated orbital), offers a physical interpretation for most of the observations on those two moecules. In addition, it allows predicting the behavior of the system upon other symmetry or conformational changes, or when the STM tip is moved away from the Co atom.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
