Journal Article

FZJ-2023-03412

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electron spin secluded inside a bottom-up assembled standing metal-molecule nanostructure

Esat, T. (Corresponding author)FZJ* ; Ternes, M.FZJ* ; Temirov, R.FZJ* ; Tautz, F. S.FZJ*

2023
APS College Park, MD

This record in other databases:    

Please use a persistent id in citations: doi:10.1103/PhysRevResearch.5.033200  doi:10.34734/FZJ-2023-03412

Abstract: Artificial nanostructures, fabricated by placing atoms or molecules as building blocks in well-defined positions, are a powerful platform in which quantum effects can be studied and exploited. In particular, they offer the opportunity to reduce the electronic interaction between large aromatic molecules and the underlying metallic substrate, if the manipulation capabilities of scanning tunneling microscopy to lift the molecule into an upright geometry on a pedestal of two metal atoms are used. Here, we report a strategy to study this interaction by investigating the Kondo effect. Measurements at millikelvin temperatures and in magnetic fields reveal that this bottom-up assembled standing metal-molecule nanostructure has an S=1/2 spin which is screened by substrate electrons, resulting in a Kondo temperature of only 291±13 mK. We extract its Landé g factor and its exchange coupling Jρ to the substrate, using a third-order perturbation theory in the weak-coupling and high-field regimes. We also show that the interaction between the scanning tunneling microscope tip and the molecule can tune the exchange coupling.

---

Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)

Research Program(s):

1. 5213 - Quantum Nanoscience (POF4-521) (POF4-521)

Appears in the scientific report 2023

---

Database coverage:
; ; ; ; Article Processing Charges ; Clarivate Analytics Master Journal List ; DOAJ Seal ; Emerging Sources Citation Index ; Fees ; IF < 5 ; JCR ; SCOPUS ; Web of Science Core Collection

---