2D Electronic Transport with Strong Spin-Orbit Coupling in Bi2- Square Net of Y2O2Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy

Ryosuke Sei, Tomoteru Fukumura, Tetsuya Hasegawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Highly crystalline Y2O2Bi epitaxial thin film with monatomic Bi2- square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y2O2Bi phase with one-step heating. The reductive state of Bi2- square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi2- square net.

Original languageEnglish
Pages (from-to)24998-25001
Number of pages4
JournalACS Applied Materials and Interfaces
Issue number45
Publication statusPublished - 2015 Nov 2


  • layered oxide
  • solid phase epitaxy
  • strong spin-orbit coupling
  • thin film growth
  • topological insulator
  • two-dimensional electronic transport

ASJC Scopus subject areas

  • Materials Science(all)

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