Related Experiment Video
Updated: Apr 2, 2026
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Light-Induced Switchable Odd-Parity Altermagnetism in One- and Two-Dimensional Triangulene Crystals
Tingfeng Zhang1, Zhuo Xiao1, Tiancheng Fang1
1Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
Nano Letters
|March 31, 2026
Summary
Researchers developed a new method to create unconventional p-wave altermagnets in 1D and 2D materials. This breakthrough enables light-controlled spin-splitting and opens doors for novel topological superconductivity.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Materials
Background:
- Altermagnetism expands magnetic state classifications.
- Current altermagnets are limited to specific parities and dimensions.
- Designing unconventional altermagnetic states remains a challenge.
Purpose of the Study:
- Propose a general strategy for designing unconventional p-wave altermagnets.
- Investigate light-induced spin-splitting in 1D and 2D collinear antiferromagnets.
- Explore potential applications in topological superconductivity.
Main Methods:
- Symmetry-guided design principles.
- First-principles calculations.
- First-principles calculations on experimentally synthesized triangulene crystals.
Main Results:
- Demonstrated a strategy for unconventional p-wave altermagnets in 1D and 2D materials.
- Realized extrinsic p-wave and f-wave altermagnets in triangulene crystals.
- Achieved high-Chern-number topological superconductivity by coupling to s-wave superconductors.
Conclusions:
- Introduced a novel mechanism for light-induced 1D and 2D odd-parity altermagnets.
- Provided a molecular platform for metal-free altermagnetism in covalent organic frameworks.
- Opened new avenues for exploring exotic magnetic and superconducting states.
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