Valence-band photoemission study of β-ZrNCl and the quasi-two-dimensional superconductor NaxZrNCl

Takayoshi Yokoya, T. Takeuchi, S. Tsuda, T. Kiss, T. Higuchi, S. Shin, K. Iizawa, S. Shamoto, T. Kajitani, T. Takahashi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We have performed photoemission (PE) spectroscopy of β-ZrNCl and NaxZrNCl to study intercalation-induced change in the electronic structure. The valence band PE spectrum of β-ZrNCl shows a small intensity region within ∼2.5 eV of EF with a very small hump at E F that can be ascribed to hydrogen impurity states. These provide spectroscopic evidence that β-ZrNCl is an n-type semiconductor. Upon Na intercalation, new states possibly involving hybridized Zr4d and N2p systematically evolve at EF, with a negligible shift in the valence band structures. Similar results in β-HfNCl and NaxHfNCl indicate that these results represent common electronic features of the layered nitride chloride superconductors.

Original languageEnglish
Article number193103
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number19
DOIs
Publication statusPublished - Nov 2004
Externally publishedYes

Fingerprint

Photoemission
Intercalation
Valence bands
intercalation
Superconducting materials
photoelectric emission
valence
n-type semiconductors
Photoelectron spectroscopy
Nitrides
Band structure
Electronic structure
nitrides
Chlorides
Hydrogen
chlorides
Impurities
Semiconductor materials
electronic structure
impurities

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Valence-band photoemission study of β-ZrNCl and the quasi-two-dimensional superconductor NaxZrNCl. / Yokoya, Takayoshi; Takeuchi, T.; Tsuda, S.; Kiss, T.; Higuchi, T.; Shin, S.; Iizawa, K.; Shamoto, S.; Kajitani, T.; Takahashi, T.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 70, No. 19, 193103, 11.2004, p. 1-4.

Research output: Contribution to journalArticle

Yokoya, T, Takeuchi, T, Tsuda, S, Kiss, T, Higuchi, T, Shin, S, Iizawa, K, Shamoto, S, Kajitani, T & Takahashi, T 2004, 'Valence-band photoemission study of β-ZrNCl and the quasi-two-dimensional superconductor NaxZrNCl', Physical Review B - Condensed Matter and Materials Physics, vol. 70, no. 19, 193103, pp. 1-4. https://doi.org/10.1103/PhysRevB.70.193103
Yokoya, Takayoshi ; Takeuchi, T. ; Tsuda, S. ; Kiss, T. ; Higuchi, T. ; Shin, S. ; Iizawa, K. ; Shamoto, S. ; Kajitani, T. ; Takahashi, T. / Valence-band photoemission study of β-ZrNCl and the quasi-two-dimensional superconductor NaxZrNCl. In: Physical Review B - Condensed Matter and Materials Physics. 2004 ; Vol. 70, No. 19. pp. 1-4.
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AU - Tsuda, S.

AU - Kiss, T.

AU - Higuchi, T.

AU - Shin, S.

AU - Iizawa, K.

AU - Shamoto, S.

AU - Kajitani, T.

AU - Takahashi, T.

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