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Transport behaviours and nanoscopic resistance profiles of electrically stressed Pt/TiO2/Ti planar junctions

Title
Transport behaviours and nanoscopic resistance profiles of electrically stressed Pt/TiO2/Ti planar junctions
Authors
Kim H.Kim D.-W.Phark S.-H.
Ewha Authors
김동욱
SCOPUS Author ID
김동욱scopus
Issue Date
2010
Journal Title
Journal of Physics D: Applied Physics
ISSN
0022-3727JCR Link
Citation
vol. 43, no. 50
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Using Pt/TiO2/Ti planar junctions fabricated with micrometre-sized gaps between electrodes, we found that the application of a bias voltage between the electrodes significantly decreased the resistance of the junction. The nanoscopic resistance profile revealed that the electrical stress modified the bulk as well as the contact resistance. Electrostatic force microscopy was used to investigate the charge distribution and its time evolution in local areas scanned by positively biased Pt-coated tips. Comparative investigations of the transport and scanning probe microscopy results suggest that the electrical stress induced a redistribution of ions, which then modified the junctions' transport characteristics. © 2010 IOP Publishing Ltd.
DOI
10.1088/0022-3727/43/50/505305
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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