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arXiv · 1912.05292

Single-Co Kondo effect in atomic Cu wires on Cu(111)

Nicolas Néel·Jörg Kröger·Malte Schüler·Bin Shao·Tim O. Wehling·Alexander Kowalski·Giorgio Sangiovanni
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Abstract

Linear atomic chains containing a single Kondo atom, Co, and several nonmagnetic atoms, Cu, were assembled atom by atom on Cu(111) with the tip of a scanning tunneling microscope. The resulting one-dimensional wires, Cu$_m$CoCu$_n$ ($0\leq m, n\leq 5$), exhibit a rich evolution of the single-Co Kondo effect with the variation of $m$ and $n$, as inferred from changes in the line shape of the Abrikosov-Suhl-Kondo resonance. The most striking result is the quenching of the resonance in CuCoCu$_2$ and Cu$_2$CoCu$_2$ clusters. State-of-the-art first-principles calculations were performed to unravel possible microscopic origins of the remarkable experimental observations.

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Nicolas Néel, Jörg Kröger, Malte Schüler, Bin Shao, Tim O. Wehling, Alexander Kowalski, Giorgio Sangiovanni. 2019-12-11. Single-Co Kondo effect in atomic Cu wires on Cu(111). https://doi.org/10.1103/physrevresearch.2.023309

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