High-quality epitaxial thin films of topological kagome metal CoSn by magnetron sputtering

Autor:	Honggyu Kim, Sebastian Hurtado Parra, Sunxiang Huang, James M. Kikkawa, T. R. Thapaliya, Timothy Yoo, Ryan F. Need, Nathan D. Arndt
Rok vydání:	2021
Předmět:	Condensed Matter::Materials Science Paramagnetism Materials science Physics and Astronomy (miscellaneous) Heterojunction Fermi energy Sputter deposition Thin film Quantum Hall effect Epitaxy Ground state Topology
Zdroj:	Applied Physics Letters. 119:201902
ISSN:	1077-3118 0003-6951
Popis:	The topological kagome metal CoSn hosts orbital-selective Dirac bands and very flat bands near the Fermi energy that lead to a range of exotic phenomena, such as fractional quantum Hall states. In this work, we report the synthesis of high-quality epitaxial (0001) CoSn films by magnetron sputtering. Comprehensive structural characterizations demonstrate high crystalline quality with low disorder, sharp interfaces, and a smooth surface. Complementary magnetic and transport properties show a paramagnetic, metallic ground state as seen in bulk. Our work creates a synthetic foundation to investigate and utilize rich topological physics in CoSn thin films and heterostructures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::320886f47b221c125d88f45cdef320ec https://doi.org/10.1063/5.0071115 Zobrazit plný text záznamu