Abstract
Liquid crystal (LC) molecules placed between the tip of a scanning tunneling microscope and a platinum substrate were irradiated by an IR source. The measurements show that the current and amplitude of the staircase observed in the i-v curve decrease significantly when -hv < eV < hv, where hv is energy of photon. The possible reasons for this effect are discussed in terms of the antenna effect in the tunnel gap, photon-induced electron transitions in LC molecules and tunneling through vacant excited states.
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Nejoh, H., Tkachenko, V.A., Tsukada, M., Aono, M. (1995). Suppression of electron tunneling through liquid crystal molecules due to infrared irradiation. In: Welland, M.E., Gimzewski, J.K. (eds) Ultimate Limits of Fabrication and Measurement. NATO ASI Series, vol 292. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0041-0_22
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DOI: https://doi.org/10.1007/978-94-011-0041-0_22
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