Size-dependent Surface States on Strained Cobalt Nanoislands on Cu(111)

Abstract

Low-temperature scanning tunneling spectroscopy over Co nanoislands on Cu(111) showed that the surface states of the islands vary with their size. Occupied states exhibit a sizeable downward energy shift as the island size decreases. The position of the occupied states also significantly changes across the islands. Atomic-scale simulations and ab inito calculations demonstrate that the driving force for the observed shift is related to size-dependent mesoscopic relaxations in the nanoislands.

4 pages, 4 figures

References in corpus (2)

• Observing Spin Polarization of Individual Magnetic Adatoms
• Detecting Electronic States at Stacking Faults in Magnetic Thin Films by Tunneling Spectroscopy

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