2018
DOI: 10.1103/physrevb.97.075101
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Topological surface state of αSn on InSb(001) as studied by photoemission

Abstract: We report on the electronic structure of the elemental topological semimetal α-Sn on InSb(001). High-resolution angle-resolved photoemission data allow to observe the topological surface state (TSS) that is degenerate with the bulk band structure and show that the former is unaffected by different surface reconstructions. An unintentional p-type doping of the as-grown films was compensated by deposition of potassium or tellurium after the growth, thereby shifting the Dirac point of the surface state below the … Show more

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Cited by 33 publications
(43 citation statements)
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“…The primitive HgTe-class material is α-Sn in which both the TRS and * zhanghj@nju.edu.cn IS are preserved and the conduction and valence bands quadratically touch at the Γ point. Moreover, topological phases in α-Sn films have been confirmed by recent experiments [49,[85][86][87][88][89].…”
Section: Introductionmentioning
confidence: 66%
See 1 more Smart Citation
“…The primitive HgTe-class material is α-Sn in which both the TRS and * zhanghj@nju.edu.cn IS are preserved and the conduction and valence bands quadratically touch at the Γ point. Moreover, topological phases in α-Sn films have been confirmed by recent experiments [49,[85][86][87][88][89].…”
Section: Introductionmentioning
confidence: 66%
“…1d. Comparing with C, Si, and Ge, α-Sn has a band inversion which makes it topologically nontrivial [87].…”
Section: Crystal Structure and Electronic Structurementioning
confidence: 99%
“…The diamond‐structured allotrope of tin (alpha tin [α‐Sn]), also known as gray tin, has attracted increasing research interest recently for its topological characters when the cubic symmetry is broken . The advantages of this material are attributed to its simple structure and large tunable nontrivial bandgap . However, α‐Sn is a metastable phase that can transform to β phase easily above the phase transition temperature of 13.2 °C.…”
Section: The Summary Of Related Parameters Including Nominal Thicknementioning
confidence: 99%
“…The crystal structure and related properties of α‐Sn need further investigation, especially at an elevated temperature. This usually imposes a limitation on the film thickness of α‐Sn from several to tens of monolayers (MLs) . Stanene, namely, an ML of α‐Sn, is one of the most popular 2D materials these years as it is predicted to be a large gap topological insulator, and related experimental results have been reported .…”
Section: The Summary Of Related Parameters Including Nominal Thicknementioning
confidence: 99%
“…1). These features of many diamond and zinc-blende materials are well-known and have been studied for the bulk and for surfaces [23][24][25][26]. We focus on the energy range between the LH and the SO band (shaded area in Fig.…”
Section: Theoretical Aspectsmentioning
confidence: 99%