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Article: Nodal surface semimetals: Theory and material realization

TitleNodal surface semimetals: Theory and material realization
Authors
Issue Date2018
Citation
Physical Review B, 2018, v. 97, n. 11, article no. 115125 How to Cite?
AbstractWe theoretically study the three-dimensional topological semimetals with nodal surfaces protected by crystalline symmetries. Different from the well-known nodal-point and nodal-line semimetals, in these materials, the conduction and valence bands cross on closed nodal surfaces in the Brillouin zone. We propose different classes of nodal surfaces, both in the absence and in the presence of spin-orbit coupling (SOC). In the absence of SOC, a class of nodal surfaces can be protected by space-time inversion symmetry and sublattice symmetry and characterized by a Z2 index, while another class of nodal surfaces are guaranteed by a combination of nonsymmorphic twofold screw-rotational symmetry and time-reversal symmetry. We show that the inclusion of SOC will destroy the former class of nodal surfaces but may preserve the latter provided that the inversion symmetry is broken. We further generalize the result to magnetically ordered systems and show that protected nodal surfaces can also exist in magnetic materials without and with SOC, given that certain magnetic group symmetry requirements are satisfied. Several concrete nodal-surface material examples are predicted via the first-principles calculations. The possibility of multi-nodal-surface materials is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/335012
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.345
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWu, Weikang-
dc.contributor.authorLiu, Ying-
dc.contributor.authorLi, Si-
dc.contributor.authorZhong, Chengyong-
dc.contributor.authorYu, Zhi Ming-
dc.contributor.authorSheng, Xian Lei-
dc.contributor.authorZhao, Y. X.-
dc.contributor.authorYang, Shengyuan A.-
dc.date.accessioned2023-10-24T08:28:27Z-
dc.date.available2023-10-24T08:28:27Z-
dc.date.issued2018-
dc.identifier.citationPhysical Review B, 2018, v. 97, n. 11, article no. 115125-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/335012-
dc.description.abstractWe theoretically study the three-dimensional topological semimetals with nodal surfaces protected by crystalline symmetries. Different from the well-known nodal-point and nodal-line semimetals, in these materials, the conduction and valence bands cross on closed nodal surfaces in the Brillouin zone. We propose different classes of nodal surfaces, both in the absence and in the presence of spin-orbit coupling (SOC). In the absence of SOC, a class of nodal surfaces can be protected by space-time inversion symmetry and sublattice symmetry and characterized by a Z2 index, while another class of nodal surfaces are guaranteed by a combination of nonsymmorphic twofold screw-rotational symmetry and time-reversal symmetry. We show that the inclusion of SOC will destroy the former class of nodal surfaces but may preserve the latter provided that the inversion symmetry is broken. We further generalize the result to magnetically ordered systems and show that protected nodal surfaces can also exist in magnetic materials without and with SOC, given that certain magnetic group symmetry requirements are satisfied. Several concrete nodal-surface material examples are predicted via the first-principles calculations. The possibility of multi-nodal-surface materials is discussed.-
dc.languageeng-
dc.relation.ispartofPhysical Review B-
dc.titleNodal surface semimetals: Theory and material realization-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.97.115125-
dc.identifier.scopuseid_2-s2.0-85044127462-
dc.identifier.volume97-
dc.identifier.issue11-
dc.identifier.spagearticle no. 115125-
dc.identifier.epagearticle no. 115125-
dc.identifier.eissn2469-9969-
dc.identifier.isiWOS:000427112600005-

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