Polarization-Modulated Rectification at Ferroelectric Surfaces
- Authors
- Wu, Weida; Guest, J. R.; Horibe, Y.; Park, S.; Choi, T.; Cheong, S. -W.; Bode, M.
- Issue Date
- May-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.104, no.21
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 104
- Number
- 21
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/22449
- DOI
- 10.1103/PhysRevLett.104.217601
- ISSN
- 0031-9007
1079-7114
- Abstract
- By correlating room temperature conductive atomic force microscopy with low temperature electrostatic force microscopy images of the same sample region, we demonstrate that nanoscale electric conduction between a sharp tip and the surface of ferroelectric HoMnO3 is intrinsically modulated by the polarization of ferroelectric domains. Conductance spectra reveal that the electric conduction is described by polarization-induced Schottky-like rectification at low bias, but dominated by a space-charge limited conduction mechanism at high bias. Our observation demonstrates visualization of ferroelectric domain structure by electric conduction, which may be used for nondestructive readout of nanoscale ferroelectric memories and/or ferroelectric sensors.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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