Fluctuation-driven, topology-stabilized order in a correlated nodal semimetal
Abstract
The interplay between strong electron correlation and band topology is at the forefront of condensed matter research. As a direct consequence of correlation, magnetism enriches topological phases and also has promising functional applications. However, the influence of topology on magnetism remains unclear, and the main research effort has been limited to ground state magnetic orders. Here we report a novel order above the magnetic transition temperature in magnetic Weyl semimetal (WSM) CeAlGe. Such order shows a number of anomalies in electrical and thermal transport, and neutron scattering measurements. We attribute this order to the coupling of Weyl fermions and magnetic fluctuations originating from a three-dimensional Seiberg-Witten monopole, which qualitatively agrees well with the observations. Our work reveals a prominent role topology may play in tailoring electron correlation beyond ground state ordering, and offers a new avenue to investigate emergent electronic properties in magnetic topological materials.
Cite
@article{arxiv.2103.08489,
title = {Fluctuation-driven, topology-stabilized order in a correlated nodal semimetal},
author = {Nathan C. Drucker and Thanh Nguyen and Fei Han and Xi Luo and Nina Andrejevic and Ziming Zhu and Grigory Bednik and Quynh T. Nguyen and Zhantao Chen and Linh K. Nguyen and Travis J. Williams and Matthew B. Stone and Alexander I. Kolesnikov and Songxue Chi and Jaime Fernandez-Baca and Tom Hogan and Ahmet Alatas and Alexander A. Puretzky and David B. Geohegan and Shengxi Huang and Yue Yu and Mingda Li},
journal= {arXiv preprint arXiv:2103.08489},
year = {2023}
}
Comments
Errors found in theoretical section of the paper