DOI: 10.1063/1.107401. Microscopic nature of the metal to insulator phase transition induced through electroreduction in single-crystal KNbO3

Microscopic nature of the metal to insulator phase transition induced through electroreduction in single-crystal KNbO3

10.1063/1.107401

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Electroreduction of the crystalline perovskite KNbO3 results in a change of the electrical resistivity by about 12–14 orders of magnitude from insulating to semimetallic at room temperature. This change is completely reversible through oxidation of the material. The semimetallic phase is characterized by a three-dimensional network of planar defects extending throughout the crystal. We have characterized the microscopic nature of this semimetallic phase by photoelectron spectroscopy after preparing the surface of the crystal to the same state. We also present evidence that at temperatures below 100 K these electroreduced materials may even become superconducting.

Bibliography

Szot, K., Speier, W., & Eberhardt, W. (1992). Microscopic nature of the metal to insulator phase transition induced through electroreduction in single-crystal KNbO3. Applied Physics Letters, 60(10), 1190â1192.

Authors 3

K. Szot (first)
W. Speier (additional)
W. Eberhardt (additional)

References 16 Referenced 40

{'key': '2024020303424308900_r1', 'first-page': '189', 'volume': '64', 'year': '1987', 'journal-title': 'Z. Phys. B'} / Z. Phys. B (1987)
10.1103/PhysRevLett.12.474 / Phys. Rev. Lett. (1964)
{'key': '2024020303424308900_r3'}
{'key': '2024020303424308900_r4'}
10.1016/0022-0248(78)90338-X / J. Cryst. Growth (1978)
10.1111/j.1151-2916.1990.tb09810.x / J. Am. Ceram. Soc. (1990)
10.1080/00150198908211335 / Ferroelectrics (1989)
10.1080/00150197808236790 / Ferroelectrics (1978)
{'key': '2024020303424308900_r9'}
10.1103/PhysRevB.4.3548 / Phys. Rev. B (1971)
{'key': '2024020303424308900_r11'}
10.1063/1.96485 / Appl. Phys. Lett. (1986)
{'key': '2024020303424308900_r13'}
10.1002/pssa.2211160121 / Phys. Status Solidi A (1989)
{'key': '2024020303424308900_r15'}
{'key': '2024020303424308900_r16'}

Dates

Type	When
Created	23 years ago (July 26, 2002, 9:33 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 10:42 p.m.)
Indexed	2 months, 2 weeks ago (June 6, 2025, 5:46 a.m.)
Issued	33 years, 5 months ago (March 9, 1992)
Published	33 years, 5 months ago (March 9, 1992)
Published Print	33 years, 5 months ago (March 9, 1992)

Funders 0

None

BibTeX

@article{Szot_1992, title={Microscopic nature of the metal to insulator phase transition induced through electroreduction in single-crystal KNbO3}, volume={60}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.107401}, DOI={10.1063/1.107401}, number={10}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Szot, K. and Speier, W. and Eberhardt, W.}, year={1992}, month=mar, pages={1190–1192} }

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