Positive and negative magnetoresistance (MR) in single-molecule Au/BDT/Au and Au/BDMT/Au junctions appeared at 100 mT, revealing π-orbital influence. Differences in MR behaviors arise from singlet–triplet state modulation by exchange interaction, explaining the MR sign reversal. These findings provide new insight into magneto-transport in π-conjugated molecular junctions.
R. Andika, G. G. Redhyka, R. Yamada and H. Tada, Phys. Chem. Chem. Phys., 2025, 27, 13812 DOI: 10.1039/D5CP01321F
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