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MA: Fachverband Magnetismus
MA 29: Spin-Dependent Phenomena in 2 D
MA 29.1: Vortrag
Mittwoch, 20. März 2024, 15:00–15:15, EB 202
Is NiPS3 a good candidate to see the Berezinskii-Kosterlitz-Thouless transition? — •Yangjun Lee1,2,3, Tae Yun Kim2, and Cheol-Hwan Park1,2,3 — 1Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea — 2Center for Correlated Electron Systems, Institute for Basic Science, Seoul 08826, Korea — 3Center for Theoretical Physics, Seoul National University, Seoul 08826, Korea
Magnetism in two-dimensional (2D) systems has been the subject of extensive study due to their distinct properties, which set them apart from three-dimensional (3D) systems. The Mermin-Wagner theorem asserts that continuous symmetry cannot be spontaneously broken in a 2D system in finite temperature. Nonetheless, the XY model, which exhibits continuous symmetry, demonstrates a phase transition at a non-zero temperature known as the Berezinskii-Kosterlitz-Thouless (BKT) transition. Recently, few-layer transition metal phosphorus trichalcogenides have garnered interest for their potential to exhibit intriguing 2D magnetic properties. Specifically, NiPS3 is regarded as an exemplar of XY model magnetism [1]. In this presentation, we will examine whether NiPS3 could be considered a promising candidate for observing the BKT transition [2, 3]. [1] Kim, K., Lim, S.Y., Lee, JU. et al. Nat. Commun. 10, 345 (2019). [2] T.Y. Kim and C.-H Park. Nano Lett. 21, 10114 (2021). [3] Y. Lee, T. Y. Kim, and C.-H. Park, unpublished.
Keywords: 2D magnetism; BKT transition; TMPX3