MnPS3 反铁磁单晶的低温电子自旋共振研究

IF 3.2 3区化学 Q2 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry C Pub Date : 2024-10-25 DOI:10.1021/acs.jpcc.4c06156

Fabrizio Moro, Bing Wu, Iva Plutnarová, Jan Plutnar, Zdenek Sofer

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引用次数: 0

摘要

属于奈尔型反铁磁体 (AFM) 的范德华 MnPS3 化合物最近已成为一种很有前途的自旋电子应用二维材料。在这项研究中，我们报告了 MnPS3 单晶体在内耳转变温度（TN = 78 K）下，在平行于晶体学 c 轴和垂直于晶体学 c 轴方向施加磁场时的电子自旋共振（ESR）研究。此外，我们还研究了温度接近 TN 时的 ESR 角度依赖性。我们观察到具有反铁磁性、铁磁性和顺磁性特征的多种共振模式。此外，我们还发现在 TBKT 和 TBKT/TN 处存在复杂的自旋-自旋相关性和磁拓扑 Berezinski-Kosterlitz-Thouless（BKT）相变（即束缚涡旋-反涡旋对），这种相变通常出现在二维磁体中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Low-Temperature Electron Spin Resonance Study of MnPS3 Antiferromagnetic Single Crystal

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Low-Temperature Electron Spin Resonance Study of MnPS3 Antiferromagnetic Single Crystal

van der Waals MnPS₃ compound belonging to the class of Néel-type antiferromagnets (AFM) has recently emerged as a promising two-dimensional material for spintronic applications. In this study, we report on the electron spin resonance (ESR) study of an MnPS₃ single crystal across the Néel transition temperature (T_N = 78 K) for the magnetic field applied in the directions parallel and perpendicular to the crystallographic c axis. Furthermore, the ESR angular dependence at a temperature near T_N has been investigated. We observed multiple resonance modes with antiferromagnetic, ferromagnetic, and paramagnetic characters. In addition, we revealed the occurrence of complex spin–spin correlations and a magnetic-topological Berezinskii–Kosterlitz–Thouless (BKT) phase transition (i.e., bound vortex-antivortex pairs) at T_BKT with T_BKT/T_N typically found in two-dimensional magnets.

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来源期刊

The Journal of Physical Chemistry C 化学-材料科学：综合

CiteScore

6.50

自引率

8.10%

发文量

2047

审稿时长

1.8 months

期刊介绍： The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.