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Electrostatic modulation of the electronic properties of Nb-doped SrTiO3 superconducting films

Contributors

Takahashi, Kei; Matthey, Daniel; Jaccard, Didier; Triscone, Jean-Marc; Shibuya, K.; Ohnishi, T.; Lippmaa, M.

Published in

Applied physics letters, vol. 84, no. 10, 1722

Publication date

2004

Abstract

We have performed ferroelectric field effect experiments using an epitaxialheterostructure composed of ferroelectricPb(Zr0.2Ti0.8)O3 and superconducting Nb-doped SrTiO3. The films were prepared on (001) SrTiO3 substrates by off-axis radio-frequency magnetron sputtering and pulsed-laser deposition. By switching the polarization field of the 500-Å-thick Pb(Zr0.2Ti0.8)O3 layer, a large change of about 30% in resistivity and a 20% shift of Tc (ΔTc∼0.05 K) were induced in the 400-Å-thick epitaxial Nb-doped SrTiO3 layer. The relationship between Tc and the electrostatically modulated average carrier concentration can be mapped onto the phase diagram of chemically doped SrTiO3

Keywords

  • Epitaxy
  • Ferroelectric thin films
  • Lead
  • Ozone
  • Sputter deposition

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

TAKAHASHI, Kei et al. Electrostatic modulation of the electronic properties of Nb-doped SrTiO3 superconducting films. In: Applied physics letters, 2004, vol. 84, n° 10, p. 1722. doi: 10.1063/1.1667279

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Article (Published version)

Identifiers

Additional URL for this publication

http://scitation.aip.org/content/aip/journal/apl/84/10/10.1063/1.1667279

Journal ISSN

0003-6951
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Technical informations

Creation

15/04/2014 13:31:00

First validation

15/04/2014 13:31:00

Update

14/03/2023 21:08:12

Status update

14/03/2023 21:08:12

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