Multifold Topological Point with Quadratic Order in Binary Skutterudite Rhodium Triarsenide
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View abstract on PubMed
Summary
This summary is machine-generated.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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