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Spin transport in organics and organic spin devices

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3 Author(s)
Yu, Z.G. ; SRI Int., Menlo Park, CA, USA ; Berding, M.A. ; Krishnamurthy, S.

The authors present a theory to describe spin transport across a polymer sandwiched between magnetic contacts and propose organic spin devices based on this theory. It is found that even a weak magnetic field can significantly modify spin transport in polymers through spin precession. This sensitivity can be exploited to design ultrasensitive magnetometers and low-power magnetic-field-effect transistors. It is shown that, at room temperature, the organic magnetometers are capable of detecting sub-nanotesla magnetic fields, and the I-V characteristics of the magnetic-field-effect transistors can be strongly modified by magnetic fields of a few gauss with response times of a few nanoseconds.

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Circuits, Devices and Systems, IEE Proceedings -  (Volume:152 ,  Issue: 4 )