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Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
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Conductivity response of amorphous oxide interfaces to pulsed light illumination
C Barone1, C Mauro1,2, A Sambri3
1Dipartimento di Fisica 'E.R. Caianiello' and CNR-SPIN Salerno, Università di Salerno, I-84084 Fisciano, Salerno, Italy.
Nanotechnology
|March 20, 2019
Summary
Investigating two-dimensional electron gases (2DEGs) at oxide interfaces revealed persistent photoconductivity. This discovery highlights the potential of these oxide interfaces for advanced applications like energy conversion and information storage.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Oxide Interfaces
Background:
- Two-dimensional electron gases (2DEGs) at oxide interfaces exhibit diverse and significant functional properties.
- Understanding the behavior of 2DEGs is crucial for developing novel electronic devices.
Purpose of the Study:
- To investigate the electric transport behavior of 2DEGs at the LaGaO3/SrTiO3 (LGO/STO) interface.
- To explore the influence of light pulses and temperature on the 2DEG properties.
Main Methods:
- Studied electric transport in LGO/STO interfaces.
- Applied light pulses with varying amplitude, duration, and repetition rate.
- Varied sample temperature from 8 K to 300 K.
Main Results:
- Observed persistent photoconductivity in the LGO/STO 2DEG system.
- Demonstrated a strong correlation between light stimuli, temperature, and transport properties.
- The observed phenomenon is linked to the complex physics inherent to these oxide interfaces.
Conclusions:
- The persistent photoconductivity in oxide interfaces is a key characteristic.
- Oxide interfaces with 2DEGs show promise for advanced applications.
- Potential applications include energy conversion and information storage technologies.
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