Atomic-scale study of type-II Dirac semimetal PtTe2surface

Pablo Casado Aguilar, Fabian Calleja, Chia-Nung Kuo, Chin Shan Lue, Barun Ghosh, Amit Agarwal, Antonio Politano, Amadeo L. Vázquez De Parga, Rodolfo Miranda, Jose Angel Silva-Guillén, Manuela Garnica

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1 引文 斯高帕斯(Scopus)


Dirac semimetals (DSM) host linear bulk bands and topologically protected surface states, giving rise to exotic and robust properties. Platinum ditelluride (PtTe2) belongs to this interesting group of topological materials. Here, we employ scanning tunneling microscopy (STM) in combination with first-principles calculations to visualize and identify the native defects at the surface of a freshly cleaved PtTe2 crystal. Around these defects, short-wavelength electron density oscillations are observed. Fourier transform analysis of the energy-dependent quasiparticle interference patterns is in good agreement with our calculated joint density of states, demonstrating the singular properties of the surface of this type-II DSM. Our results evidence the power of STM in understanding the surface of topological materials.

期刊JPhys Materials
出版狀態Published - 2022 10月

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 材料科學(全部)
  • 凝聚態物理學


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