Influence of surface states on the conductance spectra for Co adsorbed on Cu(111)

Tacca, Marcos Sebastian; Jacob, Timo; Goldberg, E. C.

doi:10.1103/physrevb.103.245419

Cited by 7 publications

(1 citation statement)

References 74 publications

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“…Note that in order to observe this long-range effect between lattice adatoms, the hybridization between adatoms and surface state needs to be strong enough. It is known that Co, Ag, Cu, Mn adatoms also show strong hybridization on Ag(111), Cu(111) or Au(111) [37,[45][46][47][48][49] besides Fe adatoms. Thus, our experiments provide a convenient platform to design and explore the artificial structures and devices with various materials combination and exotic properties, such as flat-band and topological band etc.…”

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confidence: 99%

Lieb Lattices Formed by Real Atoms on Ag(111) and Their Lattice Constant-Dependent Electronic Properties

Li¹,

Li²,

Ji³

et al. 2022

Chinese Phys. Lett.

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Scanning tunneling microscopy is a powerful tool to build artificial atomic structures that do not exist in nature but possess exotic properties. In this study, we constructed Lieb lattices with different lattice constants by real atoms, i.e., Fe atoms on Ag(111), and probed their electronic properties. We obtain a surprising long-range effective electron wavefunction overlap between Fe adatoms as it exhibits a 1 r 2 dependence with the interatomic distance r instead of the theoretically predicted exponential one. Combining control experiments, tight-binding modeling, and Green’s function calculations, we attribute the observed long-range overlap to being enabled by the surface state. Our findings enrich the understanding of the electron wavefunction overlap and provide a convenient platform to design and explore artificial structures and future devices with real atoms.

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confidence: 99%