Semiconductor Epitaxy in Superconducting Templates.

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Scalable integration of semiconductor-superconductor devices is crucial for advanced electronics.
• Current methods face challenges in achieving high-quality interfaces and compatibility with existing architectures.

Purpose of the Study:

• To demonstrate a novel monolithic integration technique for semiconductor-superconductor devices on silicon.
• To enable the growth of hybrid devices with precise control over interfaces and alignment.

Main Methods:

• Monolithic growth of indium arsenide (InAs) nanowires on silicon within lateral cavities.
• Incorporation of superconducting titanium nitride (TiN) elements.
• Electrical characterization at low temperatures.

Main Results:

• Achieved sharp semiconductor-superconductor interfaces between InAs and TiN.
• Demonstrated successful integration of InAs nanowires on silicon.
• Observed proximity-induced superconductivity in InAs through a transparent interface.

Conclusions:

• The developed technique overcomes key challenges in integrating hybrid devices.
• This approach facilitates the creation of novel superconducting devices compatible with silicon technology.
• The findings pave the way for practical implementation of semiconductor-superconductor devices.