Work

Tunable quantum transport in topological semimetal candidates La

Year: 2024

Type: article

Abstract: \n\nThe magnetic semimetal SrMnSb2 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 LaxSr1-xMnSb2 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-SrMnSb2, the Fermi surface corresponding to Fα is slightly enlarged and the small Fermi surface corresponding to Fγ appears with a tunable feature in La-doped crystals. The topological semimetal candidates LaxSr1-xMnSb2 provide a fine-tuning platform for potential applications in the future.\n

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1209/0295-5075/ad7286/pdf

Authors: Jiangpeng Song, Junbo Li, Zan Du

Institutions: Anhui University, Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area, University of Science and Technology of China, 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: green

Funders: National Natural Science Foundation of China, High Magnetic Field Laboratory, Chinese Academy of Sciences

Award: G7764233873