Modulation of conductance and superconductivity by top-gating in LaAlO{sub 3}/SrTiO{sub 3} 2-dimensional electron systems
- MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands)
We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO{sub 3}/SrTiO{sub 3} interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO{sub 3} films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO{sub 3} substrate and simultaneously act as the gate dielectric. The structured top-gates enable a local tuning and complete on/off switching of the interface (super-)conductivity, while maintaining the usual, intrinsic characteristics for these LaAlO{sub 3}/SrTiO{sub 3} interfaces when no gate voltage is applied.
- OSTI ID:
- 22254073
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 103; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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