Abstract
Spin-dependent transport of nonequilibrium holes in ferromagnetic thin films and trilayers is investigated using ballistic hole magnetic microscopy. For Co, the hole attenuation length is short and increases from 6 to 10 A in the energy range 0.8 to 2 eV. The hole transmission of a Ni81Fe19/Au/Co trilayer is clearly spin dependent, resulting in a surprisingly large current change by a factor of 2.3 in a magnetic field. The energy and spin dependence of the hole transmission cannot be explained by the phase space available for inelastic decay of the hot holes.
Original language | Undefined |
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Pages (from-to) | 027204 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 94 |
Issue number | 027204 |
DOIs | |
Publication status | Published - 2005 |
Keywords
- TSTNE-Probe-STM: Scanning Tunneling Microscope
- EWI-5379
- IR-48084
- METIS-219248
- SMI-NE: From 2006 in EWI-NE