Topological Solitons in Square-Root Graphene Nanoribbons Controlled by Electric Fields

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Materials

Background:

• Conjugational defects, known as solitons, significantly influence material properties.
• Understanding solitons is key to designing novel quantum materials with specific electronic and optical characteristics.

Purpose of the Study:

• To propose a framework for creating and controlling solitons in square-root graphene nanoribbons (GNRs).
• To utilize topological phase transitions induced by transverse electric fields for soliton manipulation.

Main Methods:

• Theoretical framework development for soliton control.
• Bottom-up synthesis of a representative GNR.
• First-principles calculations to analyze soliton states.

Main Results:

• Demonstrated a method to create and control solitons in GNRs via electric-field-induced topological phase transitions.
• Identified topological soliton states at the domain wall of the synthesized GNR under electric field.
• Confirmed experimental feasibility through synthesis and calculations.

Conclusions:

• The proposed framework enables direct manipulation and systematic study of solitons.
• This work provides a platform for advancing the understanding and application of solitons in quantum materials.