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Abstract:

We consider a natural generalization of the lattice model for a periodic array of two layers, A and B, of spinless electrons proposed by Fu [Phys. Rev. Lett. 106, 106802 (2011)PRLTAO0031-900710.1103/PhysRevLett.106.106802] as a prototype for a crystalline insulator. This model has time-reversal symmetry and broken inversion symmetry. We show that when the intralayer next-nearest-neighbor hoppings t2a,a=A,B vanish, this model supports a Weyl semimetal phase for a wide range of the remaining model parameters. When the effect of t2a is considered, topological crystalline insulating phases take place within the Weyl semimetal one. By mapping to an effective Weyl Hamiltonian we derive some analytical results for the phase diagram as well as for the structure of the nodes in the spectrum of the Weyl semimetal. © 2014 American Physical Society.

Registro:

Documento: Artículo
Título:Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry
Autor:Arrachea, L.; Aligia, A.A.
Filiación:Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Pab. I, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, Bariloche, 8400, Argentina
Año:2014
Volumen:90
Número:12
DOI: http://dx.doi.org/10.1103/PhysRevB.90.125101
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:10980121
CODEN:PRBMD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v90_n12_p_Arrachea

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Citas:

---------- APA ----------
Arrachea, L. & Aligia, A.A. (2014) . Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry. Physical Review B - Condensed Matter and Materials Physics, 90(12).
http://dx.doi.org/10.1103/PhysRevB.90.125101
---------- CHICAGO ----------
Arrachea, L., Aligia, A.A. "Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry" . Physical Review B - Condensed Matter and Materials Physics 90, no. 12 (2014).
http://dx.doi.org/10.1103/PhysRevB.90.125101
---------- MLA ----------
Arrachea, L., Aligia, A.A. "Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry" . Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 12, 2014.
http://dx.doi.org/10.1103/PhysRevB.90.125101
---------- VANCOUVER ----------
Arrachea, L., Aligia, A.A. Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry. Phys. Rev. B Condens. Matter Mater. Phys. 2014;90(12).
http://dx.doi.org/10.1103/PhysRevB.90.125101