Publications by authors named "Hasitha W Suriya Arachchige"
Quantum oscillations evidence for topological bands in kagome metal ScVSn.
J Phys Condens Matter
February 2024
Article Synopsis
- - Metals with a kagome lattice, like the newly discovered VSn, are interesting because they can have both flat-band and Dirac electronic structures.
- - The study examines ScVSn, using quantum oscillations in electrical transport and magnetization to investigate its electronic properties, which align with theoretical models.
- - Findings show a significant Berry phase for a key orbit, providing evidence of a topological band structure and enhancing understanding of the complex physics in kagome metals.
The kagome metals display an intriguing variety of electronic and magnetic phases arising from the connectivity of atoms on a kagome lattice. A growing number of these materials with vanadium-kagome nets host charge-density waves (CDWs) at low temperatures, including ScVSn, CsVSb, and VSb. Curiously, only the Sc version of the RVSn materials with a HfFeGe-type structure hosts a CDW (R = Gd-Lu, Y, Sc).
View Article and Find Full Text PDFMaterials hosting kagome lattices have drawn interest for the diverse magnetic and electronic states generated by geometric frustration. In the AV_{3}Sb_{5} compounds (A=K, Rb, Cs), stacked vanadium kagome layers give rise to unusual charge density waves (CDW) and superconductivity. Here we report single-crystal growth and characterization of ScV_{6}Sn_{6}, a hexagonal HfFe_{6}Ge_{6}-type compound that shares this structural motif.
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