p-Type vdW Semiconductor CrSCl Featuring Multipolarity Coexistence
Yong Wang, Yong Wang, Dingyi Yang, Shaopeng Wang, Wei Xu, Yu Zhang, Tarnjit Kaur Johal, Yongjie Xu, Yongmei Wang, Yongmei Wang, Yihan Zhang, Yin Zhang, Wubin Bai, Yizhang Wu, Yue Hao
Abstract
Multipolar materials represent a paradigm shift in energy conversion, nonvolatile memory, and multifunctional sensing, enabling innovative, compact, and energy-efficient devices. However, achieving multipolarity in a single material is challenging due to often conflicting structural and electronic requirements. Herein, for the first time, we synthesized a p-type vdW semiconductor CrSCl featuring the coexistence of piezoelectricity and ferromagnetism. The carrier mobility of CrSCl at room temperature was found to be approximately 473.7 cm 2 v –1 s –1 . Few-layer CrSCl crystals exhibit stable intrinsic magnetic order and effective piezoelectric coefficients. Theoretical calculations confirm that the magnetic properties of the CrSCl stem from its (a 1 ) ↑ 1 (1e) ↑ 2 electron configuration and verify the stability of the ferromagnetic ground-state. The novel material CrSCl, a 2D ferromagnetic semiconductor with piezoelectric properties, enriches the class of transition-metal-based sulfide halides and provides a robust foundation for developing scalable 2D magnetic spintronics devices.