UNIGE document Scientific Article
previous document  unige:35762  next document
add to browser collection
Title

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

Authors
Shibuya, K.
Ohnishi, T.
Lippmaa, M.
Published in Applied Physics Letters. 2004, vol. 84, no. 10, p. 1722
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 EpitaxyFerroelectric thin filmsLeadOzoneSputter deposition
Identifiers
Full text
Structures
Research group Groupe Triscone
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. https://archive-ouverte.unige.ch/unige:35762

274 hits

167 downloads

Update

Deposited on : 2014-04-15

Export document
Format :
Citation style :