Comparative study of the electronic structure of MgB2 and ZrB2

C. Jariwala, A. Chainani, S. Tsuda, Takayoshi Yokoya, S. Shin, Y. Takano, K. Togano, S. Otani, H. Kito

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

X-ray photoemission spectroscopy is used to compare the electronic structures of MgB2 and ZrB2. The B 1s core levels in high-quality MgB2 and ZrB2 exhibit a single asymmetric peak typical of a metallic boride. The Mg 2p core level shows a single peak with negligible intensity in charge-transfer satellites and no correlation effects. The Mg 2p and B 1s core-level spectra exhibit a broad bulk plasmon feature centered at about 22 eV from the main peak, in good accord with calculations. The measured valence bands are consistent with band-structure calculations indicating a higher density of states (DOS) at EF for MgB2 compared to ZrB2. The high Tc in MgB 2 is due to p-derived DOS, while ZrB2 is dominated by d-derived states at EF.

Original languageEnglish
Article number174506
Pages (from-to)1745061-1745065
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number17
Publication statusPublished - Nov 2003
Externally publishedYes

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Core levels
Electronic structure
electronic structure
Boron Compounds
borides
Borides
Photoelectron spectroscopy
Valence bands
X ray spectroscopy
Band structure
Charge transfer
photoelectric emission
charge transfer
Satellites
valence
spectroscopy
x rays

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Jariwala, C., Chainani, A., Tsuda, S., Yokoya, T., Shin, S., Takano, Y., ... Kito, H. (2003). Comparative study of the electronic structure of MgB2 and ZrB2. Physical Review B - Condensed Matter and Materials Physics, 68(17), 1745061-1745065. [174506].

Comparative study of the electronic structure of MgB2 and ZrB2. / Jariwala, C.; Chainani, A.; Tsuda, S.; Yokoya, Takayoshi; Shin, S.; Takano, Y.; Togano, K.; Otani, S.; Kito, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 17, 174506, 11.2003, p. 1745061-1745065.

Research output: Contribution to journalArticle

Jariwala, C, Chainani, A, Tsuda, S, Yokoya, T, Shin, S, Takano, Y, Togano, K, Otani, S & Kito, H 2003, 'Comparative study of the electronic structure of MgB2 and ZrB2', Physical Review B - Condensed Matter and Materials Physics, vol. 68, no. 17, 174506, pp. 1745061-1745065.
Jariwala C, Chainani A, Tsuda S, Yokoya T, Shin S, Takano Y et al. Comparative study of the electronic structure of MgB2 and ZrB2. Physical Review B - Condensed Matter and Materials Physics. 2003 Nov;68(17):1745061-1745065. 174506.
Jariwala, C. ; Chainani, A. ; Tsuda, S. ; Yokoya, Takayoshi ; Shin, S. ; Takano, Y. ; Togano, K. ; Otani, S. ; Kito, H. / Comparative study of the electronic structure of MgB2 and ZrB2. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 68, No. 17. pp. 1745061-1745065.
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