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Double perovskite Ba$_2$CdReO$_6$: a ferromagnetic topological semi-half-metal with coexistence of Weyl and nodal-ring states | | Xinlei Zhao
; Fengjie Ma
; Zhong-Yi Lu
; | | Date: |
30 Jul 2020 | | Abstract: | Magnetic topological quantum materials have attracted great attention due to
their exotic topological quantum physics induced by the interplay among
crystalology, magnetism, and topology, which are of profound importance to
fundamental research and technology applications. However, limited materials
are experimentally available, most of whom are realized by magnetic impurity
doping or heterostructural constructions. In this work, based on the
first-principles calculations, we predict that double perovskite
Ba$_2$CdReO$_6$ is an intrinsic ferromagnetic topological semi-half-metal with
a pair of Weyl points and fully spin-polarized nodal-ring states in the
vicinity of the Fermi level. Its two-dimensional nearly flat drumhead surface
states are completely spin-polarized, which would provide a wonderful platform
to study the emerging intriguing properties, especially for the applications in
spintronics, information technology, and topological superconductivity. | | Source: | arXiv, 2007.15699 | | Services: | Forum | Review | PDF | Favorites | |
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