Abstract
The tunnel momentum distribution in a magnetic tunnel junction is probed by analyzing the decayof the hot electrons in the Co metal anode after tunneling, using a three-terminal transistor structurein which the hot-electron attenuation is sensitive to the tunnel momentum distribution. Solid stateamorphous Al2O3 barriers and the vacuum barrier of a scanning tunneling microscope arecompared. For the former the attenuation length in nominally the same Co is strikingly larger factorof 2, implying a more isotropic tunnel momentum distribution for Al2O3 barriers.
Original language | English |
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Pages (from-to) | 1-3 |
Number of pages | 3 |
Journal | Applied physics letters |
Volume | 90 |
Issue number | 19 |
DOIs | |
Publication status | Published - 8 May 2007 |