title: Ð¡Ð²ÐµÑÑ Ð±ÑÑÑÑÐ¾Ðµ Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÐ¿Ð¸Ð½-ÑÐ¾Ð½Ð¾Ð½Ð½Ð¾Ðµ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ Ð² Ð²Ð°Ð½-Ð´ÐµÑ-Ð²Ð°Ð°Ð»ÑÑÐ¾Ð²ÑÑ Ð°Ð½ÑÐ¸ÑÐµÑÑÐ¾Ð¼Ð°Ð³Ð½ÐµÑÐ¸ÐºÐ°Ñ NiPS3 Ð¸ FePS3
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ultrafast laser-induced demagnetization and spin-phonon coupling in van der Waals antiferromagnets NiPS3 and FePS3
Creators: name: ÐÑÑÐ¸Ð¿Ð¾Ð²Ð°, ÐÐ»Ð¸Ð·Ð°Ð²ÐµÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¤ÐµÑÑÐ¾Ð¼Ð°Ð³Ð½ÐµÑÐ¸ÐºÐ¸
Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ° ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ñ
Ð²Ð°Ð½-Ð´ÐµÑ-Ð²Ð°Ð°Ð»ÑÑÐ¾Ð²Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
Ð¾Ð±Ð¼ÐµÐ½Ð½ÑÐ¹ Ð»Ð¸Ð½ÐµÐ¹Ð½ÑÐ¹ Ð´Ð¸Ñ ÑÐ¾Ð¸Ð·Ð¼
demagnetization
van der waals materials
exchange linear dichroism

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ð¼Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐ¸Ð¿Ð° Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ ÑÐ¿Ð¾ÑÑÐ´Ð¾ÑÐµÐ½Ð¸Ñ Ð½Ð° ÑÐ²ÐµÑÑÐ±ÑÑÑÑÑÑ Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÑ Ð² Ð½Ð¸Ð·ÐºÐ¾ÑÐ°Ð·Ð¼ÐµÑÐ½ÑÑ Ð¼Ð°Ð³Ð½ÐµÑÐ¸ÐºÐ°Ñ. Ð ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»Ð¸ ÑÐµÑÑÐ¹ÐºÐ¸ MPS3 (Ð = Ni, Fe), Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ ÑÐºÑÑÐ¾Ð»Ð¸Ð°ÑÐ¸Ð¸. FePS3 Ð¸ NiPS3 ÑÐ²Ð»ÑÑÑÑÑ Ð°Ð½ÑÐ¸ÑÐµÑÑÐ¾Ð¼Ð°Ð³Ð½Ð¸ÑÐ½ÑÐ¼Ð¸ Ð²Ð°Ð½-Ð´ÐµÑ-Ð²Ð°Ð°Ð»ÑÑÐ¾Ð²ÑÐ¼Ð¸ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°Ð¼Ð¸, ÑÐ°Ð·Ð¾Ð²ÑÐµ Ð¿ÐµÑÐµÑÐ¾Ð´Ñ Ð² ÐºÐ¾ÑÐ¾ÑÑÑ Ð¼Ð¾Ð³ÑÑ Ð±ÑÑÑ Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð´Ð²ÑÐ¼ÐµÑÐ½ÑÑ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ ÐÐ·Ð¸Ð½Ð³Ð° Ð¸ XY, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÐµÐ½Ð½Ð¾. ÐÑ Ð¸Ð·ÑÑÐ¸Ð»Ð¸, ÐºÐ°Ðº ÑÐ¸Ð¿ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÐ´ÐºÐ° Ð²Ð»Ð¸ÑÐµÑ Ð½Ð° ÑÐ²ÐµÑÑÐ±ÑÑÑÑÑÑ Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÑ, ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°Ñ Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ðµ Ð² ÑÑÐ¸Ñ Ð´Ð²ÑÑ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸ÑÑ. ÐÐ·Ð¼ÐµÑÐµÐ½Ð¸Ðµ ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»Ð¾ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð½Ð°ÐºÐ°ÑÐºÐ¸-Ð·Ð¾Ð½Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ¾Ð² Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÐ»Ð° 170 ÑÑ. ÐÐ¾Ð²Ð¾ÑÐ¾Ñ Ð¿Ð»Ð¾ÑÐºÐ¾ÑÑÐ¸ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ° Ð·Ð¾Ð½Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð¸Ð·Ð¼ÐµÑÑÐµÐ¼ÑÐ¹ Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ, ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ»ÐµÐ´ÑÑÐ²Ð¸ÐµÐ¼ Ð¾Ð±Ð¼ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ Ð´Ð¸ÑÑÐ¾Ð¸Ð·Ð¼Ð°, ÑÐ²ÑÐ·Ð°Ð½Ð½Ð¾Ð³Ð¾ Ñ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½ÑÐ¼ Ð¿Ð¾ÑÑÐ´ÐºÐ¾Ð¼ Ð² ÑÑÐµÐ´Ðµ. ÐÑÐ»Ð¸ Ð¸Ð·Ð²Ð»ÐµÑÐµÐ½Ñ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐºÑÐ¿Ð¾Ð½ÐµÐ½Ñ, ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸Ð·ÑÑÑÐ¸Ñ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÑÐµÐ¿ÐµÐ½Ð¸ Ð»Ð°Ð·ÐµÑÐ½Ð¾-Ð¸Ð½Ð´ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ñ Ð² Ð¾ÐºÑÐµÑÑÐ½Ð¾ÑÑÐ¸ TN, Ð¸ ÐºÐ¾Ð½ÑÑÐ°Ð½Ñ ÑÐ¿Ð¸Ð½-ÑÐµÑÐµÑÐ¾ÑÐ½Ð¾Ð³Ð¾ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ. Ð¥Ð°ÑÐ°ÐºÑÐµÑÐ½ÑÐµ Ð²ÑÐµÐ¼ÐµÐ½Ð° ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ñ Ð² FePS3 ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÑÑÑÑ Ð¿Ð¾ Ð¼ÐµÑÐµ Ð¿ÑÐ¸Ð±Ð»Ð¸Ð¶ÐµÐ½Ð¸Ñ Ðº ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐµ Ð¿ÐµÑÐµÑÐ¾Ð´Ð°. ÐÑ ÑÐ²ÑÐ·ÑÐ²Ð°ÐµÐ¼ ÑÑÐ¾ Ñ ÑÐµÐ¼, ÑÑÐ¾ Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð°Ñ ÑÐµÐ¿Ð»Ð¾ÐµÐ¼ÐºÐ¾ÑÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸Ð¼ÐµÐµÑ ÑÐµÐ·ÐºÐ¸Ð¹ Ð¼Ð°ÐºÑÐ¸Ð¼ÑÐ¼ Ð¿ÑÐ¸ TN. Ð Ð¾ÑÐ»Ð¸ÑÐ¸Ðµ Ð¾Ñ FePS3 Ð¿Ð¾Ð»Ð½Ð°Ñ ÑÐµÐ¿Ð»Ð¾ÐµÐ¼ÐºÐ¾ÑÑÑ NiPS3 Ð½Ðµ Ð¸Ð¼ÐµÐµÑ ÑÐµÐ·ÐºÐ¾Ð³Ð¾ Ð¼Ð°ÐºÑÐ¸Ð¼ÑÐ¼Ð° Ð²Ð±Ð»Ð¸Ð·Ð¸ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð¿ÐµÑÐµÑÐ¾Ð´Ð°. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ½ÑÐµ Ð²ÑÐµÐ¼ÐµÐ½Ð° ÑÐ°Ð·Ð¼Ð°Ð³Ð½Ð¸ÑÐ¸Ð²Ð°Ð½Ð¸Ñ Ð² NiPS3 Ð½ÐµÐ·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ Ð¸Ð·Ð¼ÐµÐ½ÑÑÑÑÑ Ð²Ð±Ð»Ð¸Ð·Ð¸ TN.
description: This work is dedicated to the experimental study of the influence of the type of magnetic ordering on the ultrafast laser-induced dynamics in low-dimensional mag-netic materials. In the experiment, we used MPS3 (M = Ni, Fe) flakes obtained by exfoliation. FePS3 and NiPS3 are antiferromagnetic van der Waals materials, 2D-Ising-like and 2D-XY-like respectively. We study how the type of magnetic order affects ultrafast laser-induced dy-namics by comparing laser-induced demagnetization in these two compounds, i.e. la-ser-induced partial quenching of magnetic ordering. The measurement of laser-induced demagnetization was carried out using the pump-probe technique. In experiments laser-induced change in the intensity and rota-tion of the polarization plane of the reflected probing pulse were measured. In par-ticular, changes of the probe polarization rotation were ascribed to the changes of ex-change linear dichroism. To compare this process in two compounds, we obtained the values of the criti-cal exponent characterizing the change in the degree of demagnetization in the vicini-ty of TN and the spin-lattice interaction constant from data on ultrafast demagnetiza-tion. The characteristic demagnetization times in FePS3 increase as the transition tem-perature is approached. We attribute this to the fact that the magnetic heat capacity of the system has a sharp maximum at TN. In contrast to FePS3, the total heat capacity of NiPS3 does not exhibit a sharp maximum near the transition temperature. As a result, the characteristic demagnetization times in NiPS3 vary slightly near TN.