Abstract
Abstract Scanning tunneling microscopy and spectroscopy are used to study the self-assembled 8OCB liquid crystal deposited on the (0001) basal plane of highly oriented pyrolitic graphite. In order to minimize the molecule–molecule interactions the single narrow stripe structures of liquid crystal are created and investigated. The I / V measurements recorded over a single narrow stripe show distinct negative resistance regions or nearly flat regions of the tunneling current. This can be a explained by the resonant tunneling model which includes tunneling via discrete energy levels of the molecule. The Coulomb blockade effect is excluded as a mechanism for the occurrence of nearly flat regions on the I / V characteristics.
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