Conduction-band electronic states of YbInCu4 studied by photoemission and soft x-ray absorption spectroscopies

Utsumi, Yuki; Sato, Hitoshi; Kurihara, Hidenao; Maso, Hiroyuki; Hiraoka, Koichi; Kojima, Kenichi; Tobimatsu, Komei; Ohkochi, Takuo; Fujimori, Shin-ichi; Takeda, Yukiharu; Saitoh, Yuji; Mimura, Kojiro; Ueda, Shigenori; Yamashita, Yoshiyuki; Yoshikawa, Hideki; Kobayashi, Keisuke; Oguchi, Tamio; Shimada, Kenya; Namatame, Hirofumi; Taniguchi, Masaki

doi:10.1103/PhysRevB.84.115143

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Conduction-band electronic states of YbInCu4 studied by photoemission and soft x-ray absorption spectroscopies

https://hiroshima.repo.nii.ac.jp/records/2008101

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PhysRevB.84.115143.pdf (614.7 KB)

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デフォルトアイテムタイプ_（フル）(1)

公開日

2023-03-18

タイトル

Conduction-band electronic states of YbInCu4 studied by photoemission and soft x-ray absorption spectroscopies

言語

作成者

Utsumi, Yuki
Sato, Hitoshi
Kurihara, Hidenao
Maso, Hiroyuki
Hiraoka, Koichi
Kojima, Kenichi
Tobimatsu, Komei
Ohkochi, Takuo
Fujimori, Shin-ichi
Takeda, Yukiharu
Saitoh, Yuji
Mimura, Kojiro
Ueda, Shigenori
Yamashita, Yoshiyuki
Yoshikawa, Hideki
Kobayashi, Keisuke
Oguchi, Tamio
Shimada, Kenya
Namatame, Hirofumi
Taniguchi, Masaki

アクセス権

open access

アクセス権URI

http://purl.org/coar/access_right/c_abf2

権利情報

主題

主題Scheme

NDC

主題

420

内容記述

We have studied conduction-band (CB) electronic states of a typical valence-transition compound YbInCu4 by means of temperature-dependent hard x-ray photoemission spectroscopy (HX-PES) of the Cu 2p3/2 and In 3d5/2 core states taken at hν=5.95 keV, soft x-ray absorption spectroscopy (XAS) of the Cu 2p3/2 core absorption region around hν∼935 eV, and soft x-ray photoemission spectroscopy (SX-PES) of the valence band at the Cu 2p3/2 absorption edge of hν=933.0 eV. With decreasing temperature below the valence transition at TV=42 K, we have found that (1) the Cu 2p3/2 and In 3d5/2 peaks in the HX-PES spectra exhibit the energy shift toward the lower binding-energy side by ∼40 and ∼30 meV, respectively, (2) an energy position of the Cu 2p3/2 main absorption peak in the XAS spectrum is shifted toward higher photon-energy side by ∼100 meV, with an appearance of a shoulder structure below the Cu 2p3/2 main absorption peak, and (3) an intensity of the Cu L3VV Auger spectrum is abruptly enhanced. These experimental results suggest that the Fermi level of the CB-derived density of states is shifted toward the lower binding-energy side. We have described the valence transition in YbInCu4 in terms of the charge transfer from the CB to Yb 4f states.

言語

出版者

American Physical Society

言語

eng

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資源タイプ識別子

http://purl.org/coar/resource_type/c_6501

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journal article

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VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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2025-02-21 04:12:53.655252

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Conduction-band electronic states of YbInCu4 studied by photoemission and soft x-ray absorption spectroscopies

× Utsumi, Yuki

× Sato, Hitoshi

× Kurihara, Hidenao

× Maso, Hiroyuki

× Hiraoka, Koichi

× Kojima, Kenichi

× Tobimatsu, Komei

× Ohkochi, Takuo

× Fujimori, Shin-ichi

× Takeda, Yukiharu

× Saitoh, Yuji

× Mimura, Kojiro

× Ueda, Shigenori

× Yamashita, Yoshiyuki

× Yoshikawa, Hideki

× Kobayashi, Keisuke

× Oguchi, Tamio

× Shimada, Kenya

× Namatame, Hirofumi

× Taniguchi, Masaki

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