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Magnetic Sensor Devices Based on Ordered Planar Arrangements of MnAs Nanocluster

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4 Author(s)
Christian Heiliger$^{1}$I. Physikalisches Institut,, Justus Liebig University,, Giessen,, Germany ; Michael Czerner ; Peter J. Klar ; Shinjiroh Hara

We propose planar magneto-electronic devices based on accurately positioned and shaped ferromagnetic MnAs nanoclusters in NiAs structure. The prototype discussed consists of a small hexagon-shaped cluster sandwiched between two elongated clusters with fixed magnetic orientations. The magnetization of the center cluster is free and can be rotated by an external magnetic field. Our ab initio calculations yield a strong dependence of the conductance as a function of the direction of the external magnetic field which exhibits an in-plane symmetry of 360 degrees.

Published in:

IEEE Transactions on Magnetics  (Volume:46 ,  Issue: 6 )