Ultrafast Laser-Induced Spin-Lattice Dynamics in the van der Waals Antiferromagnet CoPS3: Article No. 071104

D. Khusyainov, T. Gareev, V. Radovskaia, K. Sampathkumar, Swagata Acharya, M. Siskins, S. Manas-Valero, B. Ivanov, E. Coronado, Th. Raising, A. Kimel, D. Afanasiev

Research output: Contribution to journalArticlepeer-review

5 Scopus Citations

Abstract

CoPS3 stands out in the family of the van der Waals antiferromagnets XPS3 (X = Mn, Ni, Fe, and Co) due to the unquenched orbital momentum of the magnetic Co2+ ions, which is known to facilitate the coupling of spins to both electromagnetic waves and lattice vibrations. Here, using a time-resolved magneto-optical pump-probe technique, we experimentally study the ultrafast laser-induced dynamics of mutually correlated spins and lattice. It is shown that a femtosecond laser pulse acts as an ultrafast heater and, thus, results in the melting of the antiferromagnetic order. At the same time, the resonant pumping of the 4T1g --> 4T2g electronic transition in Co2+ ions effectively changes their orbital momentum, giving rise to a mechanical force that moves the ions in the direction parallel to the orientation of their spins, thus generating a coherent Bg phonon mode at the frequency of about 4.7 THz.
Original languageAmerican English
Number of pages9
JournalAPL Materials
Volume11
Issue number7
DOIs
StatePublished - 2023

NREL Publication Number

  • NREL/JA-5K00-86639

Keywords

  • spin-lattice dynamics
  • ultrafast dynamics
  • van der Waals antiferromagnet

Fingerprint

Dive into the research topics of 'Ultrafast Laser-Induced Spin-Lattice Dynamics in the van der Waals Antiferromagnet CoPS3: Article No. 071104'. Together they form a unique fingerprint.

Cite this