Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2024 Jul 17;632(8024):273–279. doi: 10.1038/s41586-024-07678-5

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Fig. 2 — a, Temperature-dependent static SHG signal on an enantiopure domain of exfoliated NiI₂ collected in both parallel- (blue) and cross- (red) polarized detection configurations. The insets show the anisotropic SHG signal both above and below the transition temperature T_HM ≈ 60 K. b, Temperature-dependent oscillatory tr-SHG measurements on NiI₂ taken at an incident pump fluence of 1.10 mJ cm⁻² with the probe perpendicular to the C₂-axis (ϕ = 0°) in the cross-polarized configuration. The oscillator energy matches the C₂-odd electromagnon, EM_o (Extended Data Fig. 2). c,e, The anisotropic tr-SHG signal at a pump–probe delay time of 1.9 ps (blue) and 2.2 ps (red) for both parallel- (c) and cross-polarized (e) detection configurations. d,f, The anisotropic tr-SHG signal is shown as a function of pump–probe delay time and the probe polarization angle ϕ for both parallel- (d) and cross-polarized (f) detection configurations. The data were collected with an incident pump fluence of 1.65 mJ cm⁻² at 2.4 K. a.u., arbitrary units.

Source data