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Título:
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Topological phases in nodeless tetragonal superconductors
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Autores:
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Varona Angulo, Santiago ;
Ortiz Martín, Laura ;
Viyuela, O. ;
Martín-Delgado Alcántara, Miguel Ángel
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Tipo de documento:
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texto impreso
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Editorial:
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IOP publishing ltd, 2018-10-03
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Tipo = Artículo
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Resumen:
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We compute the topological phase diagram of 2D tetragonal superconductors for the only possible nodeless pairing channels compatible with that crystal symmetry. Subject to a Zeeman field and spin-orbit coupling, we demonstrate that these superconductors show surprising topological features: non-trivial high Chern numbers, massive edge states, and zero-energy modes out of high symmetry points, even though the edge states remain topologically protected. Interestingly, one of these pairing symmetries, d + id, has been proposed to describe materials such as water-intercalated sodium cobaltates, bilayer silicene or highly doped monolayer graphene.
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En línea:
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https://eprints.ucm.es/50621/1/Mart%C3%ADn%20Delgado%20Alc%C3%A1ntara%20M%C3%81%20119%20PREPRINT.pdf
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