Related Experiment Video
Updated: Jun 6, 2025
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
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Multifold Topological Point with Quadratic Order in Binary Skutterudite Rhodium Triarsenide
Lunsheng Wu1, Yang Li1,2
1Aviation and Automobile School, Chongqing Youth Vocational & Technical College, Chongqing 400712, China.
ACS Omega
|November 25, 2024
Summary
Researchers discovered a unique quadratic multifold nodal point in rhodium triarsenide, a new material for studying higher-order topological states. This finding advances the field of topological physics and materials science.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Physics
Background:
- Topological nodal point states have evolved beyond linear crossings.
- Higher-order dispersions and multifold degeneracies are areas of recent focus.
Purpose of the Study:
- To identify and characterize a novel multifold nodal point state.
- To explore its properties under spin-orbit coupling.
- To investigate potential material candidates for higher-order topological states.
Main Methods:
- First-principles calculations were employed.
- Band structure analysis was performed.
- Symmetry arguments and model analysis were utilized.
Main Results:
- An ideal multifold nodal point of quadratic order was discovered in rhodium triarsenide.
- Type-III dispersion and clean band structures were observed.
- Spin-orbit coupling preserved degeneracy and quadratic characteristics, leading to quadruple degeneracy.
Conclusions:
- Rhodium triarsenide serves as an exceptional platform for studying higher-order topological point states.
- The material exhibits significant arc surface states, facilitating experimental verification.
- This research contributes to advancements in the emerging field of topological physics.
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