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Salluzzo M, Ghiringhelli G, Cezar JC, et al. Indirect electric field doping of the CuO2 planes of the cuprate NdBa2Cu3O7 superconductor. Phys Rev Lett. 2008;100(5):056810doi: 10.1103/PhysRevLett.100.056810.
Salluzzo, M., Ghiringhelli, G., Cezar, J. C., Brookes, N. B., De Luca, G. M., Fracassi, F., & Vaglio, R. (2008). Indirect electric field doping of the CuO2 planes of the cuprate NdBa2Cu3O7 superconductor. Physical review letters, 100(5), 056810. https://doi.org/10.1103/PhysRevLett.100.056810
Salluzzo, M, et al. "Indirect electric field doping of the CuO2 planes of the cuprate NdBa2Cu3O7 superconductor." Physical review letters vol. 100,5 (2008): 056810. doi: https://doi.org/10.1103/PhysRevLett.100.056810
Salluzzo M, Ghiringhelli G, Cezar JC, Brookes NB, De Luca GM, Fracassi F, Vaglio R. Indirect electric field doping of the CuO2 planes of the cuprate NdBa2Cu3O7 superconductor. Phys Rev Lett. 2008 Feb 08;100(5):056810. doi: 10.1103/PhysRevLett.100.056810. Epub 2008 Feb 08. PMID: 18352415.
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Phys Rev Lett. 2008 Feb 08;100(5):056810. doi: 10.1103/PhysRevLett.100.056810. Epub 2008 Feb 08.

Indirect electric field doping of the CuO2 planes of the cuprate NdBa2Cu3O7 superconductor.

Physical review letters

M Salluzzo, G Ghiringhelli, J C Cezar, N B Brookes, G M De Luca, F Fracassi, R Vaglio

Affiliations

  1. CNR-INFM COHERENTIA, Dipartimento di Scienze Fisiche Università di Napoli Federico II, Complesso di Monte S. Angelo, Via Cinthia, 80126 Napoli, Italy. [email protected]

PMID: 18352415 DOI: 10.1103/PhysRevLett.100.056810

Abstract

The mechanism of field-effect doping in the 123 high critical temperature superconductors (HTS) has been investigated by x-ray absorption spectroscopy in the presence of an electric field. We demonstrate that holes are created at the CuO chains of the charge reservoir and that field-effect doping of the CuO(2) planes occurs by charge transfer, from the chains to the planes, of a fraction of the overall induced holes. The electronic properties of the charge reservoir and of the dielectric-HTS interface determine the electric field doping of the CuO(2) planes.

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