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A chiral link between structure and magnetism in MnSi
V Dmitriev1, D Chernyshov, S Grigoriev
1Swiss-Norwegian Beamlines at ESRF, BP 220, Grenoble, F-38043, France. dmitriev@esrf.fr
Summary
Chiral crystal structures in metal silicides like MnSi dictate magnetic chirality. A new magneto-structural coupling allows controlling magnetic properties through structural design.
Area of Science:
- Solid State Physics
- Crystallography
- Magnetism
Background:
- Chirality in crystal structures is a key property influencing material behavior.
- Manganese silicide (MnSi) and related compounds exhibit complex interplay between structural and magnetic properties.
Purpose of the Study:
- To investigate the relationship between crystal and magnetic chiral structures in MnSi and isostructural metal silicides.
- To establish a magneto-structural relation controlling magnetic chirality via crystal structure.
Main Methods:
- Comprehensive structural and magnetic measurements.
- Symmetry analysis to define chiral configurations.
- Derivation of magneto-structural coupling relations.
Main Results:
- Defined distinct magnetic and structural chiral configurations for MnSi and related materials.
- Demonstrated that magnetic symmetry inherits chirality directly from the crystal structure.
- Derived a novel symmetrized coupling between structural and magnetic chiralities.
Conclusions:
- The crystal structure's chirality fundamentally determines the magnetic chirality in these materials.
- A new mechanism for structural control over magnetic chirality has been identified.
- This work provides a framework for designing materials with specific magnetic properties based on their crystal structure.
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