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Direct observation of the spin–orbit coupling effect in magnetic Weyl semimetal Co3Sn2S2.
- Source :
- NPJ Quantum Materials; 1/20/2022, Vol. 7 Issue 1, p1-5, 5p
- Publication Year :
- 2022
-
Abstract
- The spin–orbit coupling (SOC) lifts the band degeneracy that plays a vital role in the search for different topological states, such as topological insulators (TIs) and topological semimetals (TSMs). In TSMs, the SOC can partially gap a degenerate nodal line, leading to the formation of Dirac/Weyl semimetals (DSMs/WSMs). However, such SOC-induced gap structure along the nodal line in TSMs has not yet been systematically investigated experimentally. Here, we report a direct observation of such gap structure in a magnetic WSM Co<subscript>3</subscript>Sn<subscript>2</subscript>S<subscript>2</subscript> using high-resolution angle-resolved photoemission spectroscopy. Our results not only reveal the existence and importance of the strong SOC effect in the formation of the WSM phase in Co<subscript>3</subscript>Sn<subscript>2</subscript>S<subscript>2</subscript>, but also provide insights for the understanding of its exotic physical properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23974648
- Volume :
- 7
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- NPJ Quantum Materials
- Publication Type :
- Academic Journal
- Accession number :
- 154793023
- Full Text :
- https://doi.org/10.1038/s41535-021-00392-9