Characterization of room-temperature in-plane magnetization in thin flakes of CrTe$_2$ with a single spin magnetometer

In-plane magnetic domains and Néel-like domain walls in thin flakes of the room temperature CrTe$_2$ van der Waals ferromagnet

The recent discovery of magnetic van der Waals materials has triggered a wealth of investigations in materials science, and now offers genuinely new prospects for both fundamental and applied research. Although the catalogue of van der Waals ferromagnets is rapidly expanding, most of them have a Curie temperature below 300 K, a notable disadvantage for potential applications. Combining element-selective x-ray magnetic imaging and magnetic force microscopy, we resolve at room temperature the magnetic domains and domains walls in micron-sized flakes of the CrTe$_2$ van der Waals ferromagnet. Flu…

Stability of the In-Plane Room Temperature van der Waals Ferromagnet Chromium Ditelluride and Its Conversion to Chromium-Interleaved CrTe$_2$ Compounds

Van der Waals magnetic materials are building blocks for novel kinds of spintronic devices and playgrounds for exploring collective magnetic phenomena down to the two-dimensional limit. Chromium-tellurium compounds are relevant in this perspective. In particular, the 1$T$ phase of CrTe$_2$ has been argued to have a Curie temperature above 300~K, a rare and desirable property in the class of lamellar materials, making it a candidate for practical applications. However, recent literature reveals a strong variability in the reported properties, including magnetic ones. Using electron microscopy, …

CrTe₂范德瓦耳斯铁磁体中自旋动力学的铌掺杂调控

Spin Dynamics in the van der Waals Ferromagnet CrTe2 Engineered by Niobium Doping

通过铌掺杂调控CrTe₂自旋动力学，实现共振频率的宽频调制和阻尼常数的增加，拓展其在磁子学和量子磁子学中的应用。

利用六方氮化硼中自旋缺陷进行磁成像

Magnetic imaging with spin defects in hexagonal boron nitride

本文利用中子辐照产生含V_B^-中心的hBN薄片，实现对范德华铁磁体CrTe_2磁场的定量成像，展示了近距、柔性二维量子磁传感方案。

利用集成于范德华异质结中的自旋量子传感器进行高压磁成像

Magnetic imaging under high pressure with a spin-based quantum sensor integrated in a van der Waals heterostructure

本文提出基于hBN中V_B^-中心的范德华异质结量子传感方法，实现数GPa高压下亚微米分辨率原位磁成像，并在1T-CrTe2中验证压力依赖磁化测量。