Modulation of conductance and superconductivity by top-gating in LaAIO3/SrTiO3 2-dimensional electron systems

P.D. Eerkes; W.G. van der Wiel; H. Hilgenkamp

doi:10.1063/1.4829555

Modulation of conductance and superconductivity by top-gating in LaAIO₃/SrTiO₃ 2-dimensional electron systems

Interfaces and Correlated Electron Systems

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Abstract

We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO3/SrTiO3 interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO3 films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO3 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 LaAlO3/SrTiO3 interfaces when no gate voltage is applied.

Original language	English
Article number	201603
Number of pages	4
Journal	Applied physics letters
Volume	103
Issue number	20
DOIs	https://doi.org/10.1063/1.4829555
Publication status	Published - 26 Oct 2013

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title = "Modulation of conductance and superconductivity by top-gating in LaAIO3/SrTiO3 2-dimensional electron systems",

abstract = "We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO3/SrTiO3 interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO3 films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO3 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 LaAlO3/SrTiO3 interfaces when no gate voltage is applied.",

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AU - Eerkes, P.D.

AU - van der Wiel, W.G.

AU - Hilgenkamp, H.

N1 - eemcs-eprint-24379

PY - 2013/10/26

Y1 - 2013/10/26

N2 - We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO3/SrTiO3 interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO3 films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO3 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 LaAlO3/SrTiO3 interfaces when no gate voltage is applied.

AB - We report the electrical top-gating of a 2-dimensional electron gas (2DEG) formed at the LaAlO3/SrTiO3 interface, using electron-beam evaporated Au gate electrodes. In these structures, epitaxial LaAlO3 films grown by pulsed laser deposition induce the 2DEGs at the interface to the SrTiO3 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 LaAlO3/SrTiO3 interfaces when no gate voltage is applied.

U2 - 10.1063/1.4829555

DO - 10.1063/1.4829555

M3 - Article

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JO - Applied physics letters

JF - Applied physics letters

IS - 20

M1 - 201603

ER -

Modulation of conductance and superconductivity by top-gating in LaAIO3/SrTiO3 2-dimensional electron systems

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Modulation of conductance and superconductivity by top-gating in LaAIO₃/SrTiO₃ 2-dimensional electron systems