Cartoon representing the alignment of the spin-polarized surface states associated with the two magnetic electrodes forming a spin valve: (a) parallel alignment and forward bias, (b) antiparallel alignment and forward bias, and (c) antiparallel alignment and reverse bias. Panels to the left are for and the bias increases from left to right. The red boxes mark the three resonant conditions.
Transport properties of a S-benzene-Te molecule sandwiched between Ni  surfaces. In the large panels the characteristic for both the PA (a) and AA (b). In the left inset the MR ratio as a function of bias, and in the right one the transmission coefficient as a function of energy for the PA and zero bias.
characteristic for a benzene-thiol-thiolate molecule attached to the hollow site of Ni  and probed with a Ni STM tip. In the insets the geometrical configuration of the device and as a function of bias.
Orbital resolved density of state for benzene-thiolate-thiol molecule attached to Ni  and probed by a Ni STM tip. The tip and surface states are indicated, respectively, with red circles and blue squares.
Transmission coefficient as a function of energy at different biases for benzene-thiolate-thiol molecule attached to Ni  and probed by a Ni STM tip: parallel alignment only. Note the sharp increase of the transmission for . The solid and dashed lines represent, respectively, majority and minority spins. The vertical red lines indicate the bias window.
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