Hard-X-ray photoelectron spectroscopy of NaxCoO 2.yH2O

A. Chainani; T. Yokoya; Y. Takata; K. Tamasaku; M. Taguchi; T. Shimojima; N. Kamakura; K. Horiba; S. Tsuda; S. Shin; D. Miwa; Y. Nishino; T. Ishikawa; M. Yabashi; K. Kobayashi; H. Namatame; M. Taniguchi; K. Takada; T. Sasaki; H. Sakurai; E. Takayama-Muromachi

doi:10.1016/j.nima.2005.05.021

Hard-X-ray photoelectron spectroscopy of Na_xCoO ₂.yH₂O

A. Chainani, T. Yokoya, Y. Takata, K. Tamasaku, M. Taguchi, T. Shimojima, N. Kamakura, K. Horiba, S. Tsuda, S. Shin, D. Miwa, Y. Nishino, T. Ishikawa, M. Yabashi, K. Kobayashi, H. Namatame, M. Taniguchi, K. Takada, T. Sasaki, H. SakuraiE. Takayama-Muromachi

Department of Physics

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

6 Citations (Scopus)

Abstract

We study the bulk electronic structure of NaxCoO2.yH2O using Hard X-ray (HX, hν = 5.95 KeV) synchrotron photoelectron spectroscopy (PES). The Co 2p core level spectra show well-separated Co3+ and Co4+ ions. Cluster calculations suggest low spin Co3+ and Co4+ character, and a moderate on-site Coulomb correlation energy Udd∼3-5.5 eV. Photon-dependent valence band PES identifies Co 3d and O 2p derived states, in near agreement with band structure calculations. We discuss the importance of HX-PES for studying correlated transition metal oxides.

Original language	English
Pages (from-to)	163-168
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	547
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2005.05.021
Publication status	Published - 2005 Jul 21
Event	Proceedings of the Workshop on Hard X-Ray Photoelectron Spectroscopy HAXPES - Duration: 2004 Sept 11 → 2004 Sept 12

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2005.05.021

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Chainani, A., Yokoya, T., Takata, Y., Tamasaku, K., Taguchi, M., Shimojima, T., Kamakura, N., Horiba, K., Tsuda, S., Shin, S., Miwa, D., Nishino, Y., Ishikawa, T., Yabashi, M., Kobayashi, K., Namatame, H., Taniguchi, M., Takada, K., Sasaki, T., ... Takayama-Muromachi, E. (2005). Hard-X-ray photoelectron spectroscopy of Na_xCoO ₂.yH₂O. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 547(1), 163-168. https://doi.org/10.1016/j.nima.2005.05.021

@article{cc038691fc824edb8bd172a242d63913,

title = "Hard-X-ray photoelectron spectroscopy of NaxCoO 2.yH2O",

abstract = "We study the bulk electronic structure of NaxCoO2.yH2O using Hard X-ray (HX, hν = 5.95 KeV) synchrotron photoelectron spectroscopy (PES). The Co 2p core level spectra show well-separated Co3+ and Co4+ ions. Cluster calculations suggest low spin Co3+ and Co4+ character, and a moderate on-site Coulomb correlation energy Udd∼3-5.5 eV. Photon-dependent valence band PES identifies Co 3d and O 2p derived states, in near agreement with band structure calculations. We discuss the importance of HX-PES for studying correlated transition metal oxides.",

author = "A. Chainani and T. Yokoya and Y. Takata and K. Tamasaku and M. Taguchi and T. Shimojima and N. Kamakura and K. Horiba and S. Tsuda and S. Shin and D. Miwa and Y. Nishino and T. Ishikawa and M. Yabashi and K. Kobayashi and H. Namatame and M. Taniguchi and K. Takada and T. Sasaki and H. Sakurai and E. Takayama-Muromachi",

year = "2005",

month = jul,

day = "21",

doi = "10.1016/j.nima.2005.05.021",

language = "English",

volume = "547",

pages = "163--168",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

number = "1",

note = "Proceedings of the Workshop on Hard X-Ray Photoelectron Spectroscopy HAXPES ; Conference date: 11-09-2004 Through 12-09-2004",

}

Chainani, A, Yokoya, T, Takata, Y, Tamasaku, K, Taguchi, M, Shimojima, T, Kamakura, N, Horiba, K, Tsuda, S, Shin, S, Miwa, D, Nishino, Y, Ishikawa, T, Yabashi, M, Kobayashi, K, Namatame, H, Taniguchi, M, Takada, K, Sasaki, T, Sakurai, H & Takayama-Muromachi, E 2005, 'Hard-X-ray photoelectron spectroscopy of Na_xCoO ₂.yH₂O', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 547, no. 1, pp. 163-168. https://doi.org/10.1016/j.nima.2005.05.021

TY - JOUR

T1 - Hard-X-ray photoelectron spectroscopy of NaxCoO 2.yH2O

AU - Chainani, A.

AU - Yokoya, T.

AU - Takata, Y.

AU - Tamasaku, K.

AU - Taguchi, M.

AU - Shimojima, T.

AU - Kamakura, N.

AU - Horiba, K.

AU - Tsuda, S.

AU - Shin, S.

AU - Miwa, D.

AU - Nishino, Y.

AU - Ishikawa, T.

AU - Yabashi, M.

AU - Kobayashi, K.

AU - Namatame, H.

AU - Taniguchi, M.

AU - Takada, K.

AU - Sasaki, T.

AU - Sakurai, H.

AU - Takayama-Muromachi, E.

PY - 2005/7/21

Y1 - 2005/7/21

N2 - We study the bulk electronic structure of NaxCoO2.yH2O using Hard X-ray (HX, hν = 5.95 KeV) synchrotron photoelectron spectroscopy (PES). The Co 2p core level spectra show well-separated Co3+ and Co4+ ions. Cluster calculations suggest low spin Co3+ and Co4+ character, and a moderate on-site Coulomb correlation energy Udd∼3-5.5 eV. Photon-dependent valence band PES identifies Co 3d and O 2p derived states, in near agreement with band structure calculations. We discuss the importance of HX-PES for studying correlated transition metal oxides.

AB - We study the bulk electronic structure of NaxCoO2.yH2O using Hard X-ray (HX, hν = 5.95 KeV) synchrotron photoelectron spectroscopy (PES). The Co 2p core level spectra show well-separated Co3+ and Co4+ ions. Cluster calculations suggest low spin Co3+ and Co4+ character, and a moderate on-site Coulomb correlation energy Udd∼3-5.5 eV. Photon-dependent valence band PES identifies Co 3d and O 2p derived states, in near agreement with band structure calculations. We discuss the importance of HX-PES for studying correlated transition metal oxides.

UR - http://www.scopus.com/inward/record.url?scp=22144462136&partnerID=8YFLogxK

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U2 - 10.1016/j.nima.2005.05.021

DO - 10.1016/j.nima.2005.05.021

M3 - Conference article

AN - SCOPUS:22144462136

SN - 0168-9002

VL - 547

SP - 163

EP - 168

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1

T2 - Proceedings of the Workshop on Hard X-Ray Photoelectron Spectroscopy HAXPES

Y2 - 11 September 2004 through 12 September 2004

ER -

Hard-X-ray photoelectron spectroscopy of Na_xCoO ₂.yH₂O

Abstract

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