LDOS maps of Se on Au(111)

Superstructures of Se adsorbates on Au(111): Scanning tunneling microscopy and spectroscopy study

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JULY, 2019

Minjun Lee, Sungmo Kang, Myungchul Oh, Jungseok Chae, Jaejun Yu, Young Kuk
Surface Science 685, 19 (2019)


We studied the geometric and local electronic structure of a Se-adsorbed Au(111) surface. The reconstructed herringbone structure disappeared and the Au(111) surface states were attenuated with Se adsorption on the Au(111) surface, as explained by density functional theory calculations. Electron interference patterns were observed on the exposed Au(111) surface due to electron scattering by potential barriers formed by Se adsorbates. A strong bound state from the Se p-orbital on top of the Se clusters with quantum confinement effects were observed using scanning tunneling microscopy and spectroscopy.