DOI: 10.1063/1.1790604. Polarization-dependent electron affinity of LiNbO3 surfaces

Polarization-dependent electron affinity of LiNbO3 surfaces

10.1063/1.1790604

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Polar surfaces of a ferroelectric LiNbO3 crystal with periodically poled domains are explored using UV-photoelectron emission microscopy (PEEM). Compared with the positive domains (domains with positive surface polarization charges), a higher photoelectric yield is found from the negative domains (domains with negative surface polarization charges), indicating a lower photothreshold and a corresponding lower electron affinity. The photon-energy-dependent contrast in the PEEM images of the surfaces indicates that the photothreshold of the negative domains is ∼4.6eV while that of the positive domains is greater than ∼6.2eV. We propose that the threshold difference between the opposite domains can be attributed to a variation of the electron affinity due to opposite surface dipoles induced by surface adsorbates.

Bibliography

Yang, W.-C., Rodriguez, B. J., Gruverman, A., & Nemanich, R. J. (2004). Polarization-dependent electron affinity of LiNbO3 surfaces. Applied Physics Letters, 85(12), 2316â2318.

Authors 4

W.-C. Yang (first)
B. J. Rodriguez (additional)
A. Gruverman (additional)
R. J. Nemanich (additional)

References 19 Referenced 119

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{'key': '2024020403570994000_c2', 'volume-title': 'Surfaces and Interfaces of Solids', 'year': '1993', 'edition': '2nd ed.'} / Surfaces and Interfaces of Solids (1993)
10.1021/nl025556u / Nano Lett. (2002)
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10.1103/PhysRevB.63.125411 / Phys. Rev. B (2001)
10.1103/PhysRevB.54.6222 / Phys. Rev. B (1996)
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Dates

Type	When
Created	20 years, 10 months ago (Sept. 27, 2004, 6:03 p.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 10:57 p.m.)
Indexed	2 weeks, 6 days ago (Aug. 2, 2025, 1:01 a.m.)
Issued	20 years, 11 months ago (Sept. 20, 2004)
Published	20 years, 11 months ago (Sept. 20, 2004)
Published Print	20 years, 11 months ago (Sept. 20, 2004)

Funders 0

None

BibTeX

@article{Yang_2004, title={Polarization-dependent electron affinity of LiNbO3 surfaces}, volume={85}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1790604}, DOI={10.1063/1.1790604}, number={12}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Yang, W.-C. and Rodriguez, B. J. and Gruverman, A. and Nemanich, R. J.}, year={2004}, month=sep, pages={2316–2318} }

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