Work

Tunable quantum transport in topological semimetal candidates La x Sr 1-x MnSb 2

Year: 2024

Type: article

Abstract: The magnetic semimetal SrMnSb 2 contains a nonsymmorphic crystal symmetry that could protect Dirac crossings, offering the coexistence of a quasi-two-dimensional characteristic, magnetic order and nontrivial topology in bulk single crystals. Here, we report the evolution of Fermi surfaces by probing quantum oscillations in the La x Sr 1- x MnSb 2 single crystals. Hall measurements reveal that the conduction process changes from a hole-dominated multiband nature to a single hole-band nature after La doping. Compared with parent-SrMnSb 2 , the Fermi surface corresponding to F α is slightly enlarged and the small Fermi surface corresponding to F γ appears with a tunable feature in La-doped crystals. The topological semimetal candidates La x Sr 1- x MnSb 2 provide a fine-tuning platform for potential applications in the future.

Source: Europhysics Letters (EPL)

DOI: 10.1209/0295-5075/ad7286

Authors: Jiangpeng Song, Junbo Li, Zan Du

Institutions: Anhui University, Chinese Academy of Sciences, High Magnetic Field Laboratory

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,805

Funder: National Natural Science Foundation of China