Temperature-induced valence transition of EuPd2Si2 studied by hard x-ray photoelectron spectroscopy

Kojiro Mimura; Takayuki Uozumi; Takahiko Ishizu; Satoru Motonami; Hitoshi Sato; Yuki Utsumi; Shigenori Ueda; Akihiro Mitsuda; Kenya Shimada; Yukihiro Taguchi; Yoshiyuki Yamashita; Hideki Yoshikawa; Hirofumi Namatame; Masaki Taniguchi; Keisuke Kobayashi

doi:10.1143/JJAP.50.05FD03

Temperature-induced valence transition of EuPd₂Si₂ studied by hard x-ray photoelectron spectroscopy

Kojiro Mimura, Takayuki Uozumi, Takahiko Ishizu, Satoru Motonami, Hitoshi Sato, Yuki Utsumi, Shigenori Ueda, Akihiro Mitsuda, Kenya Shimada, Yukihiro Taguchi, Yoshiyuki Yamashita, Hideki Yoshikawa, Hirofumi Namatame, Masaki Taniguchi, Keisuke Kobayashi

Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We have studied the electronic structure of EuPd₂Si₂ by hard X-ray photoelectron spectroscopy (HX-PES) from 300 to 20 K. The temperaturedependent HX-PES spectra clearly show the valence transition, namely, the intensities of the divalent and trivalent Eu 3d components are abruptly changed. The change in Eu 3d spectral shape, especially the drastic change in the trivalent Eu 3d feature with temperature, can be explained within the framework of the Anderson model. The peak shift of Pd 3d core level with temperature indicates that the valence electrons of Pd contribute to the temperature-induced valence transition of EuPd₂Si₂.

Original language	English
Article number	05FD03
Journal	Japanese journal of applied physics
Volume	50
Issue number	5 PART 3
DOIs	https://doi.org/10.1143/JJAP.50.05FD03
Publication status	Published - May 2011

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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Mimura, K., Uozumi, T., Ishizu, T., Motonami, S., Sato, H., Utsumi, Y., Ueda, S., Mitsuda, A., Shimada, K., Taguchi, Y., Yamashita, Y., Yoshikawa, H., Namatame, H., Taniguchi, M., & Kobayashi, K. (2011). Temperature-induced valence transition of EuPd₂Si₂ studied by hard x-ray photoelectron spectroscopy. Japanese journal of applied physics, 50(5 PART 3), Article 05FD03. https://doi.org/10.1143/JJAP.50.05FD03

Mimura, K, Uozumi, T, Ishizu, T, Motonami, S, Sato, H, Utsumi, Y, Ueda, S, Mitsuda, A, Shimada, K, Taguchi, Y, Yamashita, Y, Yoshikawa, H, Namatame, H, Taniguchi, M & Kobayashi, K 2011, 'Temperature-induced valence transition of EuPd₂Si₂ studied by hard x-ray photoelectron spectroscopy', Japanese journal of applied physics, vol. 50, no. 5 PART 3, 05FD03. https://doi.org/10.1143/JJAP.50.05FD03

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abstract = "We have studied the electronic structure of EuPd2Si2 by hard X-ray photoelectron spectroscopy (HX-PES) from 300 to 20 K. The temperaturedependent HX-PES spectra clearly show the valence transition, namely, the intensities of the divalent and trivalent Eu 3d components are abruptly changed. The change in Eu 3d spectral shape, especially the drastic change in the trivalent Eu 3d feature with temperature, can be explained within the framework of the Anderson model. The peak shift of Pd 3d core level with temperature indicates that the valence electrons of Pd contribute to the temperature-induced valence transition of EuPd2Si2.",

author = "Kojiro Mimura and Takayuki Uozumi and Takahiko Ishizu and Satoru Motonami and Hitoshi Sato and Yuki Utsumi and Shigenori Ueda and Akihiro Mitsuda and Kenya Shimada and Yukihiro Taguchi and Yoshiyuki Yamashita and Hideki Yoshikawa and Hirofumi Namatame and Masaki Taniguchi and Keisuke Kobayashi",

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AU - Mimura, Kojiro

AU - Uozumi, Takayuki

AU - Ishizu, Takahiko

AU - Motonami, Satoru

AU - Sato, Hitoshi

AU - Utsumi, Yuki

AU - Ueda, Shigenori

AU - Mitsuda, Akihiro

AU - Shimada, Kenya

AU - Taguchi, Yukihiro

AU - Yamashita, Yoshiyuki

AU - Yoshikawa, Hideki

AU - Namatame, Hirofumi

AU - Taniguchi, Masaki

AU - Kobayashi, Keisuke

PY - 2011/5

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N2 - We have studied the electronic structure of EuPd2Si2 by hard X-ray photoelectron spectroscopy (HX-PES) from 300 to 20 K. The temperaturedependent HX-PES spectra clearly show the valence transition, namely, the intensities of the divalent and trivalent Eu 3d components are abruptly changed. The change in Eu 3d spectral shape, especially the drastic change in the trivalent Eu 3d feature with temperature, can be explained within the framework of the Anderson model. The peak shift of Pd 3d core level with temperature indicates that the valence electrons of Pd contribute to the temperature-induced valence transition of EuPd2Si2.

AB - We have studied the electronic structure of EuPd2Si2 by hard X-ray photoelectron spectroscopy (HX-PES) from 300 to 20 K. The temperaturedependent HX-PES spectra clearly show the valence transition, namely, the intensities of the divalent and trivalent Eu 3d components are abruptly changed. The change in Eu 3d spectral shape, especially the drastic change in the trivalent Eu 3d feature with temperature, can be explained within the framework of the Anderson model. The peak shift of Pd 3d core level with temperature indicates that the valence electrons of Pd contribute to the temperature-induced valence transition of EuPd2Si2.

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Temperature-induced valence transition of EuPd₂Si₂ studied by hard x-ray photoelectron spectroscopy

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