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Exact lattice-model calculation of boundary modes for Weyl semimetals and graphene
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- Kaladzhyan, Vardan (author)
- KTH,Kondenserade materiens teori
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- Pinon, Sarah (author)
- Univ Paris Saclay, CEA CNRS, Inst Phys Theor, F-91190 Gif Sur Yvette, France.
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- Bardarson, Jens H. (author)
- KTH,Kondenserade materiens teori
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- Bena, Cristina (author)
- Univ Paris Saclay, CEA CNRS, Inst Phys Theor, F-91190 Gif Sur Yvette, France.
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(creator_code:org_t)
- 2020-10-20
- English.
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In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 22:10
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https://doi.org/10.1...
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Abstract
Subject headings
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- We provide an exact analytical technique to obtain within a lattice model the wave functions of the edge states in zigzag- and bearded-edge graphene, as well as of the Fermi-arc surface states in Weyl semimetals described by a minimal bulk model. We model the corresponding boundaries as an infinite scalar potential localized on a line, and respectively within a plane. We use theT-matrix formalism to obtain the dispersion and the spatial distribution of the corresponding boundary modes. Furthermore, to demonstrate the power of our approach, we write down the surface Green's function of the considered Weyl semimetal model, and we calculate the quasiparticle interference patterns originating from an impurity localized at the respective surface.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Weyl semimetal
- graphene
- quasiparticle interference pattern
- T-matrix
- surface states
- Fermi arc
- boundary Green's function
Publication and Content Type
- ref (subject category)
- art (subject category)
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