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Observation of surface states on heavily indium doped SnTe(111), a superconducting topological crystalline insulator

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 نشر من قبل Craig Polley
 تاريخ النشر 2015
  مجال البحث فيزياء
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The topological crystalline insulator tin telluride is known to host superconductivity when doped with indium (Sn$_{1-x}$In$_{x}$Te), and for low indium contents ($x=0.04$) it is known that the topological surface states are preserved. Here we present the growth, characterization and angle resolved photoemission spectroscopy analysis of samples with much heavier In doping (up to $xapprox0.4$), a regime where the superconducting temperature is increased nearly fourfold. We demonstrate that despite strong p-type doping, Dirac-like surface states persist.



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