AN INTERPRETATION OF THE CORRELATION BETWEEN THE INTENSITY OF SCANNING-TUNNELING-MICROSCOPY (STM) INDUCED LIGHT-EMISSION AND THE TOPOGRAPHIC HEIGHT FOR THE METAL PARTICLES

The correlation between the intensity of Scanning Tunneling Microscopy (STM) induced light emission and the topographic height for metal part icles is described. The topographic height dependence of the STM induc ed light emission from the STM induced dipole on the gold particles is calculated. The light emission is considered as the radiation from tu nneling induced dipole, and the intensity is calculated as a function of the orientation of the dipole moment which depends on the position of the STM tip over the particles. The light intensity is nearly propo rtional to the topographic height of the particles. This result explai ns the linear correlation of the contrast between the photon intensity map and the STM topographic image.