X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT2Zn20 (T: Rh and Ir)

Fuminori Honda; Yusuke Hirose; Atsushi Miyake; Masaichiro Mizumaki; Naomi Kawamura; Satoshi Tsutsui; Tetsu Watanuki; Shinji Watanabe; Tetsuya Takeuchi; Rikio Settai; Dai Aoki; Yoshichika O'Nuki

doi:10.1088/1742-6596/592/1/012021

X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT₂Zn₂₀ (T: Rh and Ir)

Fuminori Honda, Yusuke Hirose, Atsushi Miyake, Masaichiro Mizumaki, Naomi Kawamura, Satoshi Tsutsui, Tetsu Watanuki, Shinji Watanabe, Tetsuya Takeuchi, Rikio Settai, Dai Aoki, Yoshichika O'Nuki

Materials Processing and Characterization Division

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

2 Citations (Scopus)

Abstract

YbT₂Zn₂₀ (T: Rh and Ir), which crystallizes in the cubic CeCr₂Al₂₀-type structure, is a member of the well-known heavy fermion compounds, indicating a huge electronic specific heat coefficient γ ≃ 500 mJ/(K²·mol). We have measured temperature and magnetic field dependences of Yb valence in YbT₂Zn₂₀ (T: Rh and Ir) at ambient pressure by the Lm edge x- ray absorption spectroscopy in order to investigate the valence state of Yb 4f electrons in these compounds. It is revealed that the Yb valence in both compounds significantly decreases with temperature below about 100 K and increases with increasing magnetic field at low temperatures in contrast to the case of YbCo₂Zn₂₀.

Original language	English
Article number	012021
Journal	Journal of Physics: Conference Series
Volume	592
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/592/1/012021
Publication status	Published - 2014
Event	2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France Duration: 2014 Jul 7 → 2014 Jul 14

ASJC Scopus subject areas

Physics and Astronomy(all)

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Honda, F., Hirose, Y., Miyake, A., Mizumaki, M., Kawamura, N., Tsutsui, S., Watanuki, T., Watanabe, S., Takeuchi, T., Settai, R., Aoki, D., & O'Nuki, Y. (2014). X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT₂Zn₂₀ (T: Rh and Ir). Journal of Physics: Conference Series, 592(1), [012021]. https://doi.org/10.1088/1742-6596/592/1/012021

Honda, F, Hirose, Y, Miyake, A, Mizumaki, M, Kawamura, N, Tsutsui, S, Watanuki, T, Watanabe, S, Takeuchi, T, Settai, R, Aoki, D & O'Nuki, Y 2014, 'X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT₂Zn₂₀ (T: Rh and Ir)', Journal of Physics: Conference Series, vol. 592, no. 1, 012021. https://doi.org/10.1088/1742-6596/592/1/012021

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title = "X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT2Zn20 (T: Rh and Ir)",

abstract = "YbT2Zn20 (T: Rh and Ir), which crystallizes in the cubic CeCr2Al20-type structure, is a member of the well-known heavy fermion compounds, indicating a huge electronic specific heat coefficient γ ≃ 500 mJ/(K2·mol). We have measured temperature and magnetic field dependences of Yb valence in YbT2Zn20 (T: Rh and Ir) at ambient pressure by the Lm edge x- ray absorption spectroscopy in order to investigate the valence state of Yb 4f electrons in these compounds. It is revealed that the Yb valence in both compounds significantly decreases with temperature below about 100 K and increases with increasing magnetic field at low temperatures in contrast to the case of YbCo2Zn20.",

author = "Fuminori Honda and Yusuke Hirose and Atsushi Miyake and Masaichiro Mizumaki and Naomi Kawamura and Satoshi Tsutsui and Tetsu Watanuki and Shinji Watanabe and Tetsuya Takeuchi and Rikio Settai and Dai Aoki and Yoshichika O'Nuki",

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doi = "10.1088/1742-6596/592/1/012021",

language = "English",

volume = "592",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

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T2 - 2014 International Conference on Strongly Correlated Electron Systems, SCES 2014

AU - Honda, Fuminori

AU - Hirose, Yusuke

AU - Miyake, Atsushi

AU - Mizumaki, Masaichiro

AU - Kawamura, Naomi

AU - Tsutsui, Satoshi

AU - Watanuki, Tetsu

AU - Watanabe, Shinji

AU - Takeuchi, Tetsuya

AU - Settai, Rikio

AU - Aoki, Dai

AU - O'Nuki, Yoshichika

PY - 2014

Y1 - 2014

N2 - YbT2Zn20 (T: Rh and Ir), which crystallizes in the cubic CeCr2Al20-type structure, is a member of the well-known heavy fermion compounds, indicating a huge electronic specific heat coefficient γ ≃ 500 mJ/(K2·mol). We have measured temperature and magnetic field dependences of Yb valence in YbT2Zn20 (T: Rh and Ir) at ambient pressure by the Lm edge x- ray absorption spectroscopy in order to investigate the valence state of Yb 4f electrons in these compounds. It is revealed that the Yb valence in both compounds significantly decreases with temperature below about 100 K and increases with increasing magnetic field at low temperatures in contrast to the case of YbCo2Zn20.

AB - YbT2Zn20 (T: Rh and Ir), which crystallizes in the cubic CeCr2Al20-type structure, is a member of the well-known heavy fermion compounds, indicating a huge electronic specific heat coefficient γ ≃ 500 mJ/(K2·mol). We have measured temperature and magnetic field dependences of Yb valence in YbT2Zn20 (T: Rh and Ir) at ambient pressure by the Lm edge x- ray absorption spectroscopy in order to investigate the valence state of Yb 4f electrons in these compounds. It is revealed that the Yb valence in both compounds significantly decreases with temperature below about 100 K and increases with increasing magnetic field at low temperatures in contrast to the case of YbCo2Zn20.

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VL - 592

JO - Journal of Physics: Conference Series

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X-ray absorption spectroscopy and novel electronic properties in heavy fermion compounds YbT₂Zn₂₀ (T: Rh and Ir)

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