The Effects of Resonant Tunneling on Magnetoresistance through a Q uantum Dot

Details The Effects of Resonant Tunneling on Magnetoresistance through a Q uantum Dot The Effects of Resonant Tunneling on Magnetoresistance through a Q uantum Dot

1998-06-26

arxiv.org/abs/cond-mat/9806314v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 3 figures(mail if you need), use revtex.sty

Scientific paper

10.1103/PhysRevB.59.4985

The effect of resonant tunneling on magnetoresistance (MR) is studied theoretically in a double junction system. We have found that the ratio of the MR of the resonant peak current is reduced more than that of the single junction, whereas that of the valley current is enhanced depending on the change of the discrete energy-level under the change of magnetic field. We also found that the peak current-valley current (PV) ratio decreases when the junction conductance increases.

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