Volume 60, Number 6, December 2002
|Page(s)||896 - 902|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 December 2002|
Hot-electron transport in 3-terminal devices based on magnetic tunnel junctions
Unité Mixte de Physique CNRS Thales
Domaine de Corbeville, 91404 Orsay Cedex, France
2 Laboratoire de Physique des Matériaux, UMR CNRS 7556 BP 239, 54506 Vandoeuvre les Nancy Cedex, France
Corresponding author: firstname.lastname@example.org
Accepted: 2 October 2002
An original study combining spin polarization with hot-electron transport in a 3-terminal double tunnel junction device is presented. We report for the first time a tunnel magnetoresistance signal for each tunnel barrier in an integrated device made with two different insulating materials. Furthermore, a hot-electron transfer from the emitter to the collector, both magnetic, through the base and both tunnel barriers is presented with an appropriate set of applied voltages. The characteristics of the hot electrons have been successfully modeled theoretically on the basis of experimental tunnel barrier parameters. However, in contrast to the theory, no field dependence of the hot-electron characteristics was measured. Possible origins for this discrepancy are discussed.
PACS: 72.25.-b – Spin polarized transport / 73.40.-c – Electronic transport in interface structures / 73.40.Gk – Tunneling
© EDP Sciences, 2002
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