Papers presented at the workshop on photons and scanning probe microscopies, Konstanz July 1992.
- Autor(in)
- Referenz
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12 R. Berndt, J. K. Gimzewski, P. Johansson, in preparation
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16 These experiments were performed using a digital feedback system developed by Timothy Wong (University of Cambridge). We should like to thank him for his assistance during the measurement
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- Seitenbereich
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0133 - 0140
- Schlagwort(e)
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<KWD>Field emission
Inelastic tunneling
Inverse photoemission
- Zusammenfsg.
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The pronounced variation of the intensity of photons emitted from the tunneling gap of an STM with respect to the applied bias voltage <I>V</I><sub><I>t</I></sub> is studied experimentally using simultaneous measurements of tunneling characteristics and photon emission. We show that the structure in isochromat photon spectra are determined by the following: bias-dependent changes in tunneling characteristics, density of initial and final states, and modifications of tip-induced plasmon modes. It is demonstrated that isochromat spectra provide a conclusive test for the inelastic tunneling mechanism. Coupling between tunneling electrons and tip-induced plasmon modes which gives rise to the intense photon emission observed is discussed within this model.
- Artikel-Typen
- Forschungsartikel