Abstract
To clarify the mechanism of resistance-switching phenomena, we have investigated the change in the electronic structure of a Ni nanowire device during resistance-switching operations using scanning photoelectron microscopy techniques. We directly observed the disappearance of density of state (DOS) at the Fermi level (EF) in a high-resistance state and recovery of a finite DOS at EF in a low-resistance state. These results are direct evidence that the Ni nanowire is fully oxidized after switching to the high-resistance state and that Ni-metal conductive paths in the oxidized nanowire are recovered in the low-resistance state.
Original language | English |
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Article number | 193114 |
Journal | Applied Physics Letters |
Volume | 103 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2013 Nov 4 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)