Probing momentum distributions in magnetic tunnel junctions via hot-electron decay

Jansen, R. and Banerjee, T. and Park, B.G. and Lodder, J.C. (2007) Probing momentum distributions in magnetic tunnel junctions via hot-electron decay. Applied physics letters, 90 (19). pp. 1-3. ISSN 0003-6951

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Abstract:	The tunnel momentum distribution in a magnetic tunnel junction is probed by analyzing the decay of the hot electrons in the Co metal anode after tunneling, using a three-terminal transistor structure in which the hot-electron attenuation is sensitive to the tunnel momentum distribution. Solid state amorphous Al2O3 barriers and the vacuum barrier of a scanning tunneling microscope are compared. For the former the attenuation length in nominally the same Co is strikingly larger factor of 2, implying a more isotropic tunnel momentum distribution for Al2O3 barriers.
Item Type:	Article
Copyright:	© 2007 American Institute of Physics
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/64404
Official URL:	http://dx.doi.org/10.1063/1.2737128
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