Electro-Optical Switching Behavior of a Mott Insulator--Band Insulator Interface

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3606181· OSTI ID:21608200

Rastogi, A; Kushwaha, A K; Shiyani, T; Gangawar, A ^[1]; Budhani, R C ^[1]

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1. Condensed Matter-Low Dimensional Systems Laboratory, Department of Physics, Indian Institute of Technology, Kanpur-208016 (India)

Here we present our results of a large photoconductivity in ultra-thin epitaxial layers of LaTiO{sub 3}(LTO) grown on SrTiO{sub 3}(STO) single crystal surfaces on exposure to ultraviolet light. We note that the change in conductivity on photo-exposure can be modulated by an electric field applied in field effect transistor geometry. We present a scenario where electrons from the lower Hubbard band of LTO and oxygen defects states of STO accumulate at the interface. The extent of this accumulation is modified by electric and photon fields giving rise to a potentially new electronic device.

• OSTI ID: 21608200
• Journal Information: AIP Conference Proceedings, Vol. 1349, Issue 1; Conference: 55. DAE solid state physics symposium 2010, Manipal (India), 26-30 Dec 2010; Other Information: DOI: 10.1063/1.3606181; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
CRYSTAL DEFECTS
ELECTRIC FIELDS
ELECTRONS
EPITAXY
FIELD EFFECT TRANSISTORS
INTERFACES
LANTHANUM COMPOUNDS
LAYERS
MONOCRYSTALS
PHOTOCONDUCTIVITY
PHOTONS
STRONTIUM TITANATES
SURFACES
ULTRAVIOLET RADIATION
ALKALINE EARTH METAL COMPOUNDS
BOSONS
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MASSLESS PARTICLES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SEMICONDUCTOR DEVICES
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSISTORS
TRANSITION ELEMENT COMPOUNDS