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Title
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Comment on "Electron states for gapped pseudospin-1 fermions in the field of a charged impurity"
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Author
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Abstract
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| In a recent paper [Phys. Rev. B 99, 155124 (2019)], the spectrum of a regularized Coulomb charge was studied in gapped pseudospin-1 systems generated by an alpha - T-3 lattice. The electronic spectrum was studied as a function of the impurity strength Z alpha. However, the results and conclusions on the behavior of the flatband states as a function of the impurity strength are incomplete. In this Comment, I argue that because of the dispersionless nature of the flatband, the states spread out under the influence of a charged impurity forming a continuous band of states. I support my arguments with explicit numerical calculations which show the emergence of a continuum of states. |
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Language
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English
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Source (journal)
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Physical review B / American Physical Society. - New York, N.Y, 2016, currens
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Publication
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College pk
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Amer physical soc
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2020
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ISSN
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2469-9969
[online]
2469-9950
[print]
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DOI
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10.1103/PHYSREVB.101.197102
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Volume/pages
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101
:19
(2020)
, p. 1-3
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Article Reference
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197102
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ISI
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000533793600004
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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