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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Floquet Engineering Spin Triplet States in Unconventional Magnets.
Pei-Hao Fu1, Sayan Mondal2, Jun-Feng Liu1
1Guangzhou University, School of Physics and Materials Science, Guangzhou 510006, China.
Physical Review Letters
|March 1, 2026
Summary
Light drives induce spin-triplet states in unconventional magnets, creating new superconducting correlations. This research explores controlling these states with light for potential applications in spintronics and quantum computing.
Area of Science:
- Condensed Matter Physics
- Quantum Materials
- Light-Matter Interactions
Background:
- Unconventional magnets and superconductors exhibit complex spin behaviors.
- Spin-triplet states are crucial for advanced quantum phenomena.
- Understanding light-induced effects is key to novel material functionalities.
Purpose of the Study:
- To investigate the emergence of spin-triplet states in unconventional magnets under light drives.
- To explore the formation of odd-frequency spin-triplet superconducting correlations.
- To analyze the influence of light frequency and polarization on magnetic and superconducting properties.
Main Methods:
- Theoretical modeling of unconventional magnets with and without superconductivity.
- Analysis of high-frequency and low-frequency light drives (linear and circular polarization).
- Investigation of Floquet band effects on superconducting correlations.
Main Results:
- High-frequency light drives induce spin-triplet density in d-wave altermagnets, revealing altermagnetic field strength.
- Linearly polarized light creates controllable odd-frequency spin-triplet superconducting correlations (d-wave and s-wave).
- Low-frequency light drives broaden superconducting correlations, enabling spin-triplet pairs in d- and p-wave magnets.
Conclusions:
- Light drives offer a powerful tool to engineer spin-triplet states and novel superconducting correlations.
- The frequency and polarization of light can precisely control these emergent quantum states.
- This work opens avenues for light-tunable quantum materials and devices.
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