The Hg-Sr (Mercury-Strontium) System

Gumiński, C.

doi:10.1007/s11669-005-0070-z

Cited by 5 publications

(4 citation statements)

References 13 publications

(1 reference statement)

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“…We apply DFT including the effects of SOC to predict topological phases stabilized by wallpaper groups pgg and p4g in previously synthesized, stable materials. The details of these large-scale calculations are provided in Appendix F. We find double-glide topological phases on the (001)-surface (wallpaper group p4g) of three members of the SG 127 (P 4/mbm) A 2 B 3 family of materials: Sr 2 Pb 3 43,44 , Au 2 Y 3 45 , and Hg 2 Sr 3 46,47 . Shown in Fig.…”

Section: Materials Realizationsmentioning

confidence: 90%

“…The details of these large-scale calculations are provided in section 6 of ( 22). We find doubleglide topological phases on the (001) surface (wallpaper group p4g) of three members of the space group 127 (P4/mbm) A 2 B 3 family of materials: Sr 2 Pb 3 (42,43), Au 2 Y 3 (44), and Hg 2 Sr 3 (45,46). We find that Sr 2 Pb 3 has a gap at the Fermi energy at each crystal momentum, in spite of the presence of electron and hole pockets (Fig.…”

Section: Materials Realizationsmentioning

confidence: 91%

“…Finally, we present the details of the semi-infinite surface Green's function calculations used to predict topological surface features for the materials in the main text. All of the materials candidates presented in this work were previously synthesized, and all were sufficiently stable as to have been powderized and examined under X-ray diffraction in an argon environment [43][44][45][46][47]49 .…”

Section: Appendix F: Density Functional Theory Methods and Additionalmentioning

confidence: 99%

“…262043) 45 , and Hg 2 Sr 3 (ICSD Nos. 107371, 247135) 46,47 , are capable of hosting double-glide topological crystalline phases. To explore the electronic properties of these materials, we employed firstprinciples calculations based on DFT.…”

Section: Sr2pb3 Au2y3 and Hg2sr3 In Sg 127mentioning

confidence: 99%

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Wallpaper fermions and the nonsymmorphic Dirac insulator

Wieder

Bradlyn

Wang

et al. 2018

Science

169

189

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Materials whose gapless surface states are protected by crystal symmetries include mirror topological crystalline insulators and nonsymmorphic hourglass insulators. There exists only a very limited set of possible surface crystal symmetries, captured by the 17 "wallpaper groups." Here we show that a consideration of symmetry-allowed band degeneracies in the wallpaper groups can be used to understand previously described topological crystalline insulators and to predict phenomenologically distinct examples. In particular, the two wallpaper groups with multiple glide lines, and4, allow for a topological insulating phase whose surface spectrum consists of only a single, fourfold-degenerate, true Dirac fermion, representing an exception to a symmetry-enhanced fermion-doubling theorem. We theoretically predict the presence of this phase in SrPb in space group 127 (4.

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Section: Materials Realizationsmentioning

confidence: 90%