Self-contained Kondo effect in single molecules

TL;DR

This paper reports the observation of the Kondo effect in single-molecule organometallic compounds, providing new insights into nanoscale Kondo physics and its role in bonding.

Contribution

It demonstrates the presence of Kondo coupling in specific organometallic molecules, expanding the understanding of Kondo phenomena beyond traditional intermetallics.

Findings

Evidence of Kondo coupling in cerocene and ytterbocene compounds

Magnetic susceptibility and X-ray absorption spectroscopy confirm Kondo effect

Implications for nanoscale Kondo studies and organometallic bonding

Abstract

Kondo coupling of f and conduction electrons is a common feature of f-electron intermetallics. Similar effects should occur in carbon ring systems(metallocenes). Evidence for Kondo coupling in Ce(C8H8)2 (cerocene) and the ytterbocene Cp*2Yb(bipy) is reported from magnetic susceptibility and L_III-edge x-ray absorption spectroscopy. These well-defined systems provide a new way to study the Kondo effect on the nanoscale, should generate insight into the Anderson Lattice problem, and indicate the importance of this often-ignored contribution to bonding in organometallics.