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(Color online) (a) Schematics of the nanopore device and chemical structure of the octanethiol molecule. The arrow shows the magnetic field direction. (b) characteristic of the octanethiol-MTJ device at . Inset shows the same data on a logarithmic scale. (c) Inelastic electron tunneling spectrum of the MTJ at . Molecular vibrational features from , , , and modes are identified in the spectrum. Peaks labeled “*” are possibly due to a Ni phonon and the encasing membrane, respectively.
(Color online) (a) Junction resistance change as a function of magnetic field at a dc bias of and . The data were recorded when the magnetic field was swept from (circles) and then back to (diamonds). The arrows denote the field sweeping directions. (b) Device JMR as a function of bias at . A sharp decrease of JMR occurred around .
(Color online) Spin-polarized IETS spectra at magnetic fields of , , and . Four pronounced peaks appear, and the first peak position corresponds well to the onset of the abrupt decrease of the JMR at shown in Fig. 2(b).
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