Related Experiment Video
Updated: Mar 31, 2026
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
9.0K
Spin-Phonon Coupling and Magnetic Ordering in Layered CrPS4.
Juhi Pandey1, Dirk Wulferding2, Woohyun Cho1
1Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.
ACS Applied Materials & Interfaces
|March 30, 2026
Summary
Magnetism in van der Waals (vdW) materials like CrPS4 exhibit strong spin-phonon coupling. This interaction is robust across thicknesses, making CrPS4 promising for future magnetic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Van der Waals (vdW) materials offer unique platforms for studying magnetism and spin-phonon coupling.
- CrPS4 is an air-stable A-type antiferromagnet with a Néel temperature of 36 K.
Purpose of the Study:
- Investigate temperature and thickness effects on phonon modes in CrPS4.
- Explore the spin-phonon coupling in CrPS4 using Raman spectroscopy and theoretical calculations.
Main Methods:
- Raman spectroscopy at varying temperatures and layer thicknesses.
- Theoretical calculations to support experimental findings.
Main Results:
- Phonon frequency shifts due to thickness were negligible (<0.5 cm⁻¹).
- Anomalous temperature-dependent behavior of a P-S rocking mode indicated strong spin-phonon interaction via Cr-S-Cr super-exchange.
- Magnetic order and spin-phonon interactions were robust across different thicknesses.
Conclusions:
- CrPS4 exhibits significant spin-phonon coupling, comparable to other vdW magnets.
- Robust magnetic properties and spin-phonon coupling make CrPS4 suitable for vdW heterostructures and magnetic devices.
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