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Single-molecule conductance oscillations in alkane rings
We investigate the single-molecule electrical conductance of alkane rings connected to gold electrodes and demonstrate that their logarithmic conductances are ocillatory functions of length. This contrasts with the logarithmic conductances of alkane chains, which decay linearly with length. This non-classical behaviour is attributed to conformational effects in the alkane rings, which tend to be more (less) planar when their branches contain even (odd) numbers of CH2 groups. Surprisingly thedoi:10.5281/zenodo.3719270 fatcat:3tyiofiqzjay3h63riguzo4w4m