Charge Density Wave and Ferromagnetism in Intercalated CrSBr
Abstract
In materials with one-dimensional electronic bands, electron-electron interactions can produce intriguing quantum phenomena, including spin-charge separation and charge density waves (CDW). Most of these systems, however, are non-magnetic, motivating a search for anisotropic materials where the coupling of charge and spin may affect emergent quantum states. Here, chemical intercalation of the van der Waals magnetic semiconductor CrSBr yields , which possess an electronically driven quasi-1D CDW with an onset temperature above room temperature. Concurrently, electron doping increases the magnetic ordering temperature from 132 K to 200 K and switches its interlayer magnetic coupling from antiferromagnetic to ferromagnetic. The spin-polarized nature of the anisotropic bands that give rise to this CDW enforces an intrinsic coupling of charge and spin. The coexistence and interplay of ferromagnetism and charge modulation in this exfoliatable material provides a promising platform for studying tunable quantum phenomena across a range of temperatures and thicknesses.
Cite
@article{arxiv.2412.08631,
title = {Charge Density Wave and Ferromagnetism in Intercalated CrSBr},
author = {Margalit L. Feuer and Morgan Thinel and Xiong Huang and Zhi-Hao Cui and Yinming Shao and Asish K. Kundu and Daniel G. Chica and Myung-Geun Han and Rohan Pokratath and Evan J. Telford and Jordan Cox and Emma York and Saya Okuno and Chun-Ying Huang and Owethu Bukula and Luca M. Nashabeh and Siyuan Qiu and Colin P. Nuckolls and Cory R. Dean and Simon J. L. Billinge and Xiaoyang Zhu and Yimei Zhu and Dmitri N. Basov and Andrew J. Millis and David R. Reichman and Abhay N. Pasupathy and Xavier Roy and Michael E. Ziebel},
journal= {arXiv preprint arXiv:2412.08631},
year = {2025}
}
Comments
Main text: 33 pages, 4 figures, 1 table. Supplementary Information: 21 pages, 10 figures, 2 tables (with minor updates)