Fu–Kane–Mele monopoles in semimetals
In semimetals with time-reversal symmetry, the interplay between Weyl points and Fu–Kane–Mele indices results in coexisting surface Dirac cones and Fermi arcs that are transmutable without a topological phase transition. We show that Weyl points act as a new type of monopole, and that their connecti...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-10-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321317302493 |
| _version_ | 1811214509817200640 |
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| author | Guo Chuan Thiang Koji Sato Kiyonori Gomi |
| author_facet | Guo Chuan Thiang Koji Sato Kiyonori Gomi |
| author_sort | Guo Chuan Thiang |
| collection | DOAJ |
| description | In semimetals with time-reversal symmetry, the interplay between Weyl points and Fu–Kane–Mele indices results in coexisting surface Dirac cones and Fermi arcs that are transmutable without a topological phase transition. We show that Weyl points act as a new type of monopole, and that their connectivity is essential for capturing the full topology of semimetals and their role as intermediaries of topological insulator transitions. The history of Weyl point creation–annihilation provides a simple and mathematically equivalent way to classify semimetals, and directly prefigures the surface state topology. We further predict the possibility of a topological Dirac cone on the interface between two Weyl semimetals. |
| first_indexed | 2024-04-12T06:05:59Z |
| format | Article |
| id | doaj.art-4ededc58a58c4482be1a651eab0e37fc |
| institution | Directory Open Access Journal |
| issn | 0550-3213 1873-1562 |
| language | English |
| last_indexed | 2024-04-12T06:05:59Z |
| publishDate | 2017-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-4ededc58a58c4482be1a651eab0e37fc2022-12-22T03:44:53ZengElsevierNuclear Physics B0550-32131873-15622017-10-01923C10712510.1016/j.nuclphysb.2017.07.018Fu–Kane–Mele monopoles in semimetalsGuo Chuan Thiang0Koji Sato1Kiyonori Gomi2School of Mathematical Sciences, University of Adelaide, SA 5000, AustraliaInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanDepartment of Mathematical Sciences, Shinshu University, Matsumoto, Nagano 390-8621, JapanIn semimetals with time-reversal symmetry, the interplay between Weyl points and Fu–Kane–Mele indices results in coexisting surface Dirac cones and Fermi arcs that are transmutable without a topological phase transition. We show that Weyl points act as a new type of monopole, and that their connectivity is essential for capturing the full topology of semimetals and their role as intermediaries of topological insulator transitions. The history of Weyl point creation–annihilation provides a simple and mathematically equivalent way to classify semimetals, and directly prefigures the surface state topology. We further predict the possibility of a topological Dirac cone on the interface between two Weyl semimetals.http://www.sciencedirect.com/science/article/pii/S0550321317302493 |
| spellingShingle | Guo Chuan Thiang Koji Sato Kiyonori Gomi Fu–Kane–Mele monopoles in semimetals Nuclear Physics B |
| title | Fu–Kane–Mele monopoles in semimetals |
| title_full | Fu–Kane–Mele monopoles in semimetals |
| title_fullStr | Fu–Kane–Mele monopoles in semimetals |
| title_full_unstemmed | Fu–Kane–Mele monopoles in semimetals |
| title_short | Fu–Kane–Mele monopoles in semimetals |
| title_sort | fu kane mele monopoles in semimetals |
| url | http://www.sciencedirect.com/science/article/pii/S0550321317302493 |
| work_keys_str_mv | AT guochuanthiang fukanemelemonopolesinsemimetals AT kojisato fukanemelemonopolesinsemimetals AT kiyonorigomi fukanemelemonopolesinsemimetals |