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Effect of quantum confinement and influence of extra charge on the electric field gradient in ZnO

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Abstract

By means of electron-nuclear double resonance (ENDOR), it is shown that the Al impurity, which acts as a shallow donor in ZnO, leads to a significant reduction of the electric field gradient in ZnO single crystals. In ZnO quantum dots, however, the gradient on the Al sites remains virtually unchanged. When the Zn2+ ion is substituted by Mn2+ in a ZnO single crystal, the electric field gradient slightly increases (by about 20%). Therefore, the Mn2+ ions can be used as probes to monitor the electric field gradients in ZnO crystals.

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Original Russian Text © Yu.S. Kutin, G.V. Mamin, S.B. Orlinskii, A.P. Bundakova, P.G. Baranov, 2012, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2012, Vol. 95, No. 9, pp. 534–539.

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Kutin, Y.S., Mamin, G.V., Orlinskii, S.B. et al. Effect of quantum confinement and influence of extra charge on the electric field gradient in ZnO. Jetp Lett. 95, 471–475 (2012). https://doi.org/10.1134/S0021364012090081

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  • DOI: https://doi.org/10.1134/S0021364012090081

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