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Metallated carbon nanowires for potential quantum computing applications via substrate proximity
Chi Ho Wong1,2, Chak-Yin Tang1, Chi Pong Tsui1
1Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
Iscience
|April 15, 2025
Summary
Researchers explored metallated carbyne nanowires for hosting Majorana zero modes (MZM). Optimized Ruthenium-based carbyne structures show potential for quantum computing applications by exhibiting MZM properties.
Area of Science:
- Quantum Computing
- Materials Science
- Condensed Matter Physics
Background:
- Next-generation quantum computing faces challenges in detecting and manipulating Majorana zero modes (MZM).
- Metallated carbyne nanowires are investigated as potential platforms for hosting these elusive quantum states.
Purpose of the Study:
- To investigate the existence and properties of Majorana zero modes (MZM) in metallated carbyne nanowires.
- To optimize metallated carbyne structures for enhanced magnetic and spin-orbital coupling properties relevant to MZM realization.
Main Methods:
- Computational modeling and optimization of various metallated carbyne structures (Mo, Tc, Ru).
- Analysis of magnetic moments, spin-orbital coupling, and electronic band structures.
Main Results:
- Achieved average magnetic moments exceeding 1μB for Mo, Tc, and Ru metallated carbyne, with local moments over 2μB for Ru.
- Observed periodic magnetic variations in Ru-carbyne with length and strong spin-orbital coupling (~140 meV).
- Demonstrated that ferromagnetic Ru-carbyne on a superconducting Ru substrate can induce band inversions and transitions driven by spin-orbital coupling.
Conclusions:
- Metallated carbyne nanowires, particularly Ru-based systems, show significant promise for hosting Majorana zero modes.
- These findings open avenues for developing novel carbon-based materials for advanced quantum computing applications.
