Issues »  Volume 43, Issue 6

Heterogeneous Ordering of Oxygen Vacancies in Yttrium-Barium Cuprate

V. V. Shamaev$^{1}$, E. S. Zhitlukhina$^{2,3}$, N. M. Zalutska$^{3}$, K. O. Ochkan$^{4}$

$^{1}$Donetsk National Technical University, 2 Shybankov Sqr., UA-85300 Pokrovs’k, Ukraine
$^{2}$Donetsk Institute for Physics and Engineering Named after O. O. Galkin, NAS of Ukraine, 46 Nauky Ave., UA-03028 Kyiv, Ukraine
$^{3}$Vasyl’ Stus Donetsk National University, 21 600-richchya Str., UA-21021 Vinnytsia, Ukraine
$^{4}$Kyiv Academic University, N.A.S. and M.E.S. of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 05.04.2021. Download: PDF

By the example of yttrium-barium cuprate, a superconductor with a high critical temperature, we show that the polar nature of complex transition-metal oxides leads to redistribution of the oxygen vacancies concentration in the near-surface region. As a result, a nanoscale region of the surface space charge, that serves as a potential barrier for charge carriers tunnelling into such oxide, is arisen.

Key words: complex oxides of transition metals, oxygen vacancies, local heterogeneity, memristive effects.

URL: https://mfint.imp.kiev.ua/en/abstract/v43/i06/0819.html

DOI: https://doi.org/10.15407/mfint.43.06.0819

PACS: 68.47.Gh, 68.65.-k, 73.20.At, 73.40.-c, 74.72.-h, 74.78.Na

Citation: V. V. Shamaev, E. S. Zhitlukhina, N. M. Zalutska, and K. O. Ochkan, Heterogeneous Ordering of Oxygen Vacancies in Yttrium-Barium Cuprate, Metallofiz. Noveishie Tekhnol., 43, No. 6: 819—830 (2021) (in Ukrainian)

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