Quasiparticle interference on the surface of the topological crystalline insulator Pb1-xSnxSe

  title={Quasiparticle interference on the surface of the topological crystalline insulator Pb1-xSnxSe},
  author={Andr{\'a}s Gyenis and Ilya Drozdov and Stevan Nadj-Perge and Oliver Jeong and J. H. Seo and I Pletikosi{\'c} and Tonica Valla and Genda Gu and Ali Yazdani},
  journal={Physical Review B},
Topological crystalline insulators represent a novel topological phase of matter in which the surface states are protected by discrete point group symmetries of the underlying lattice. Rock-salt lead-tin-selenide alloy is one possible realization of this phase, which undergoes a topological phase transition upon changing the lead content. We used scanning tunneling microscopy (STM) and angle resolved photoemission spectroscopy (ARPES) to probe the surface states on (001) Pb_(1−x)Sn_xSe in the… 

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