Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor NaxHfNCl

T. Takeuchi; S. Tsuda; T. Yokoya; T. Tsukamoto; S. Shin; A. Hirai; S. Shamoto; T. Kajitani

doi:10.1016/S0921-4534(03)00752-4

Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor Na_xHfNCl

T. Takeuchi, S. Tsuda, T. Yokoya, T. Tsukamoto, S. Shin, A. Hirai, S. Shamoto, T. Kajitani

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of β-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na _0.37HfNCl show an additional structure within the band gap of β-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation.

Original language	English
Pages (from-to)	127-129
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	392-396
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(03)00752-4
Publication status	Published - Oct 2003
Externally published	Yes
Event	Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: Nov 11 2002 → Nov 13 2002

Keywords

Electronic structure
Layered nitride chloride superconductor
Photoemission
Soft X-ray emission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(03)00752-4

Cite this

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title = "Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor NaxHfNCl",

abstract = "We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of β-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na 0.37HfNCl show an additional structure within the band gap of β-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation.",

keywords = "Electronic structure, Layered nitride chloride superconductor, Photoemission, Soft X-ray emission",

author = "T. Takeuchi and S. Tsuda and T. Yokoya and T. Tsukamoto and S. Shin and A. Hirai and S. Shamoto and T. Kajitani",

year = "2003",

month = oct,

doi = "10.1016/S0921-4534(03)00752-4",

language = "English",

volume = "392-396",

pages = "127--129",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "PART 1",

note = "Proceedings of the 15th International Symposium on Superconduc ; Conference date: 11-11-2002 Through 13-11-2002",

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TY - JOUR

T1 - Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor NaxHfNCl

AU - Takeuchi, T.

AU - Tsuda, S.

AU - Yokoya, T.

AU - Tsukamoto, T.

AU - Shin, S.

AU - Hirai, A.

AU - Shamoto, S.

AU - Kajitani, T.

PY - 2003/10

Y1 - 2003/10

N2 - We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of β-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na 0.37HfNCl show an additional structure within the band gap of β-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation.

AB - We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of β-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na 0.37HfNCl show an additional structure within the band gap of β-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation.

KW - Electronic structure

KW - Layered nitride chloride superconductor

KW - Photoemission

KW - Soft X-ray emission

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JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

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