Science Advances

Supplementary Materials

This PDF file includes:

  • Section S1. SdH quantum oscillation and effective mass in Bi2O2Se bulk crystal
  • Section S2. Statistical result of Se-atom coverage on the cleaved Bi2O2Se surface
  • Section S3. Determination of the high-symmetry points along kz and bulk band structure of Bi2O2Se
  • Section S4. Potassium doping and the structure of electron pocket
  • Section S5. Fitting of the electron and hole pockets
  • Section S6. Calculation on the formation of surface dimer
  • Section S7. Monte Carlo simulation and analysis of STM image
  • Section S8. Density functional theory calculation on half Se coverage surface
  • Fig. S1. SdH quantum oscillation and effective mass.
  • Fig. S2. STM spectra with atomic resolution in different regions.
  • Fig. S3. Photon energy–dependent ARPES measurements.
  • Fig. S4. Potassium doping and the structure of electron pocket.
  • Fig. S5. Fitting of electron and hole pockets.
  • Fig. S6. Slab model used for the calculation on the formation energies of different Se-atom and vacancy configurations.
  • Fig. S7. Monte Carlo simulation and analysis of STM image.
  • Fig. S8. Theoretical calculation of half Se coverage surface.

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