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1. Reference layer exchange in spin transfer torque experiment using magnetic-coated nanometric point contacts

Author

Cunha, R.O., Baptista, D.L., Heinemann, M., Kuhn, M.F., Schmidt, J.E., and Pereira, L.G.

Subjects
*MAGNETIC properties of thin films, *SURFACE coatings, *NANOSTRUCTURED materials, *SPIN transfer torque, *TUNGSTEN, *RANDOM access memory
Abstract

Abstract: We investigate the importance of using nanotips on a point contact spin-transfer torque (STT) experiment. A systematic analysis comparing the STT in a magnetic thin film in current-perpendicular-to-plane (CPP) geometry sample for magnetic coated and uncoated tungsten nanotips is shown. The STT effect presents a reverse resistance to current behavior when using a magnetic coating layer on the nanotips. We demonstrate that the magnetic layer on the tip may assume the role of a polarizer layer. This effect opens up the possibility of exploiting simpler architectures in STT-based devices, such as STT-random access memory (STT-RAM). [Copyright &y& Elsevier]

Published
2012
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