Modification of the surface-state occupancy on noble metal films with stacking fault arrays

[摘要]：Low-temperature scanning tunneling spectroscopy reveals that striped Au films grown on Ag templates containing periodic arrays of stacking faults exhibit partially populated one-dimensional (1D) surface states, in contrast to the depopulated 1D surface states on the Ag template. Detailed spectroscopic analysis on Au stripes shows the presence of 1D states with onset slightly below the Fermi level, while two-dimensional surface states exist at lower energies. These findings indicate that the Au stripes, owing to their occupied 1D surface states, may provide an effective means for 1D transport of charge and spin information between magnetic adsorbates. (C) 2012 American Institute of Physics. [http://dx.doi. org/10.1063/1.3701777]

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