Electrostatic potential measurement at the Pt/TiO$_2$ interface using electron holography

Hiroshi Nakajima; Toshiaki Tanigaki; Takaaki Toriyama; Mahito Yamamoto; Hidekazu Tanaka; Yasukazu Murakami

doi:10.1063/5.0046501

Electrostatic potential measurement at the Pt/TiO$_2$ interface using electron holography

Materials Science 2021-05-19 v1 Mesoscale and Nanoscale Physics

Authors: Hiroshi Nakajima , Toshiaki Tanigaki , Takaaki Toriyama , Mahito Yamamoto , Hidekazu Tanaka , Yasukazu Murakami

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

The interface of Pt/TiO $_2$ plays an essential role in device engineering and chemical reactions. Here, we report the electrostatic potential distribution of a Pt/TiO $_2$ interface by electron holography. The decrease of the electrostatic potential exists at TiO $_2$ in the vicinity of the interface, indicating the presence of negative charge due to electron transfer from TiO $_2$ and Pt. The decrease of the electrostatic potential can be understood in the difference in work functions between Pt and TiO $_2$ . This study reveals the interplay between Pt and TiO $_2$ and the usefulness of electron holography for probing the potential in nanoscale interfaces.

Keywords

oxide interfaces

Cite

@article{arxiv.2104.14774,
  title  = {Electrostatic potential measurement at the Pt/TiO$_2$ interface using electron holography},
  author = {Hiroshi Nakajima and Toshiaki Tanigaki and Takaaki Toriyama and Mahito Yamamoto and Hidekazu Tanaka and Yasukazu Murakami},
  journal= {arXiv preprint arXiv:2104.14774},
  year   = {2021}
}

Electrostatic potential measurement at the Pt/TiO$_2$ interface using electron holography

Abstract

Keywords

Cite

Related papers