Magnetoresistance signature of two-dimensional electronic states in Co3Sn2S2
Abstract
Two-dimensional (2D) Dirac bands and flat bands are characteristics of a kagome lattice. However, experimental studies on their electrical transport are few, because three-dimensional (3D) bulk bands of kagome materials, consisting of stacked 2D kagome layers, dominate the transport. We report a magnetoresistance (MR) study of a kagome material, Co3Sn2S2 . Based on analysis of the temperature, magnetic field, and field angle dependence of the resistivity, we obtain a complete anatomy of MR. Besides a magnon MR, a chirality-dependent MR, and a chiral-anomaly-induced MR, the most intriguing feature is an orbital MR that scales only with the out-of-plane field, which strongly indicates its 2D nature. We attribute it to the Dirac band of the kagome lattice.
- Publication:
-
Physical Review B
- Pub Date:
- February 2023
- DOI:
- 10.1103/PhysRevB.107.085203
- arXiv:
- arXiv:2302.09229
- Bibcode:
- 2023PhRvB.107h5203Z
- Keywords:
-
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Materials Science
- E-Print:
- 17 pages, 4 figures, 1 table