Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2 C

Koji Horiba, Ryu Yukawa, Taichi Mitsuhashi, Miho Kitamura, Takeshi Inoshita, Noriaki Hamada, Shigeki Otani, Naoki Ohashi, Sachiko Maki, Jun Ichi Yamaura, Hideo Hosono, Youichi Murakami, Hiroshi Kumigashira

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Two-dimensional (2D) electrides are a new concept material in which anionic electrons are confined in the interlayer space between positively charged layers. We have carried out angle-resolved photoemission spectroscopy measurements on Y2C, which is a possible 2D electride, in order to verify the formation of 2D electride states in Y2C. We clearly observe the existence of semimetallic "electride bands" near the Fermi level, as predicted by ab initio calculations, which conclusively demonstrates that Y2C is a quasi-2D electride with electride bands derived from interlayer anionic electrons.

Original languageEnglish
Article number045101
JournalPhysical Review B
Volume96
Issue number4
DOIs
Publication statusPublished - 2017 Jul 5
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2 C'. Together they form a unique fingerprint.

  • Cite this

    Horiba, K., Yukawa, R., Mitsuhashi, T., Kitamura, M., Inoshita, T., Hamada, N., Otani, S., Ohashi, N., Maki, S., Yamaura, J. I., Hosono, H., Murakami, Y., & Kumigashira, H. (2017). Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2 C. Physical Review B, 96(4), [045101]. https://doi.org/10.1103/PhysRevB.96.045101