Temperature-Dependent Change of Correlated Electronic States in Yb4As3 and Yb4(As1-xSbx)3 Probed by High Resolution Photoemission Spectroscopy

Shigemasa Suga; Akira Ochiai; Takashi Suzuki; Hideyuki Harada; Akira Sekiyama; Tomohiro Matsushita; Takeshi Iwasaki; Akio Kimura; Masanori Tsunekawa; Takayuki Muro; Shigenori Ueda; Hiroshi Daimon; Shin Imada; Hirofumi Namatame; Masaki Taniguchi; Hiroyoshi Ishii; Tsuneaki Miyahara; Takaaki Hanyu; Atsushi Fujimori

doi:10.1143/JPSJ.67.3552

Temperature-Dependent Change of Correlated Electronic States in Yb₄As₃ and Yb₄(As_1-xSb_x)₃ Probed by High Resolution Photoemission Spectroscopy

Shigemasa Suga, Akira Ochiai, Takashi Suzuki, Hideyuki Harada, Akira Sekiyama, Tomohiro Matsushita, Takeshi Iwasaki, Akio Kimura, Masanori Tsunekawa, Takayuki Muro, Shigenori Ueda, Hiroshi Daimon, Shin Imada, Hirofumi Namatame, Masaki Taniguchi, Hiroyoshi Ishii, Tsuneaki Miyahara, Takaaki Hanyu, Atsushi Fujimori

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

13 Citations (Scopus)

Abstract

Clear changes of the Yb 4f photoemission spectra with temperature are observed in Yb₄As₃ by high resolution photoemission spectroscopy. The photoemission intensity is very low at the Fermi level and decreases as the temperature is lowered in accord with the narrowing of the 4f spectra. Bulk and surface contributions are deconvoluted in the 4f¹³ final state spectra. In comparison with the corresponding results in Yb₄(As_1-xSb_x)₃, the spectral changes of Yb₄As₃ with temperature are confirmed to be beyond simple thermal broadening effects and related to the charge ordering effects. Although the change from the charge ordering temperature (T_t) down to about T_t/2 is consistent with a theoretical prediction, the change below it is rather unusual and may be ascribed to the incompleteness of the charge ordering effect. Spectral changes with Yb₄Sb₃-substitution are qualitatively discussed.

Original language	English
Pages (from-to)	3552-3560
Number of pages	9
Journal	journal of the physical society of japan
Volume	67
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.67.3552
Publication status	Published - 1998 Oct
Externally published	Yes

Keywords

4f electron
Charge ordering
Correlated band
Heavy fermion
Long chain
Short chain
Structural phase transition

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.67.3552

Cite this

Suga, S., Ochiai, A., Suzuki, T., Harada, H., Sekiyama, A., Matsushita, T., Iwasaki, T., Kimura, A., Tsunekawa, M., Muro, T., Ueda, S., Daimon, H., Imada, S., Namatame, H., Taniguchi, M., Ishii, H., Miyahara, T., Hanyu, T., & Fujimori, A. (1998). Temperature-Dependent Change of Correlated Electronic States in Yb₄As₃ and Yb₄(As_1-xSb_x)₃ Probed by High Resolution Photoemission Spectroscopy. journal of the physical society of japan, 67(10), 3552-3560. https://doi.org/10.1143/JPSJ.67.3552

Suga, S, Ochiai, A, Suzuki, T, Harada, H, Sekiyama, A, Matsushita, T, Iwasaki, T, Kimura, A, Tsunekawa, M, Muro, T, Ueda, S, Daimon, H, Imada, S, Namatame, H, Taniguchi, M, Ishii, H, Miyahara, T, Hanyu, T & Fujimori, A 1998, 'Temperature-Dependent Change of Correlated Electronic States in Yb₄As₃ and Yb₄(As_1-xSb_x)₃ Probed by High Resolution Photoemission Spectroscopy', journal of the physical society of japan, vol. 67, no. 10, pp. 3552-3560. https://doi.org/10.1143/JPSJ.67.3552

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title = "Temperature-Dependent Change of Correlated Electronic States in Yb4As3 and Yb4(As1-xSbx)3 Probed by High Resolution Photoemission Spectroscopy",

abstract = "Clear changes of the Yb 4f photoemission spectra with temperature are observed in Yb4As3 by high resolution photoemission spectroscopy. The photoemission intensity is very low at the Fermi level and decreases as the temperature is lowered in accord with the narrowing of the 4f spectra. Bulk and surface contributions are deconvoluted in the 4f13 final state spectra. In comparison with the corresponding results in Yb4(As1-xSbx)3, the spectral changes of Yb4As3 with temperature are confirmed to be beyond simple thermal broadening effects and related to the charge ordering effects. Although the change from the charge ordering temperature (Tt) down to about Tt/2 is consistent with a theoretical prediction, the change below it is rather unusual and may be ascribed to the incompleteness of the charge ordering effect. Spectral changes with Yb4Sb3-substitution are qualitatively discussed.",

keywords = "4f electron, Charge ordering, Correlated band, Heavy fermion, Long chain, Short chain, Structural phase transition",

author = "Shigemasa Suga and Akira Ochiai and Takashi Suzuki and Hideyuki Harada and Akira Sekiyama and Tomohiro Matsushita and Takeshi Iwasaki and Akio Kimura and Masanori Tsunekawa and Takayuki Muro and Shigenori Ueda and Hiroshi Daimon and Shin Imada and Hirofumi Namatame and Masaki Taniguchi and Hiroyoshi Ishii and Tsuneaki Miyahara and Takaaki Hanyu and Atsushi Fujimori",

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T1 - Temperature-Dependent Change of Correlated Electronic States in Yb4As3 and Yb4(As1-xSbx)3 Probed by High Resolution Photoemission Spectroscopy

AU - Suga, Shigemasa

AU - Ochiai, Akira

AU - Suzuki, Takashi

AU - Harada, Hideyuki

AU - Sekiyama, Akira

AU - Matsushita, Tomohiro

AU - Iwasaki, Takeshi

AU - Kimura, Akio

AU - Tsunekawa, Masanori

AU - Muro, Takayuki

AU - Ueda, Shigenori

AU - Daimon, Hiroshi

AU - Imada, Shin

AU - Namatame, Hirofumi

AU - Taniguchi, Masaki

AU - Ishii, Hiroyoshi

AU - Miyahara, Tsuneaki

AU - Hanyu, Takaaki

AU - Fujimori, Atsushi

PY - 1998/10

Y1 - 1998/10

N2 - Clear changes of the Yb 4f photoemission spectra with temperature are observed in Yb4As3 by high resolution photoemission spectroscopy. The photoemission intensity is very low at the Fermi level and decreases as the temperature is lowered in accord with the narrowing of the 4f spectra. Bulk and surface contributions are deconvoluted in the 4f13 final state spectra. In comparison with the corresponding results in Yb4(As1-xSbx)3, the spectral changes of Yb4As3 with temperature are confirmed to be beyond simple thermal broadening effects and related to the charge ordering effects. Although the change from the charge ordering temperature (Tt) down to about Tt/2 is consistent with a theoretical prediction, the change below it is rather unusual and may be ascribed to the incompleteness of the charge ordering effect. Spectral changes with Yb4Sb3-substitution are qualitatively discussed.

AB - Clear changes of the Yb 4f photoemission spectra with temperature are observed in Yb4As3 by high resolution photoemission spectroscopy. The photoemission intensity is very low at the Fermi level and decreases as the temperature is lowered in accord with the narrowing of the 4f spectra. Bulk and surface contributions are deconvoluted in the 4f13 final state spectra. In comparison with the corresponding results in Yb4(As1-xSbx)3, the spectral changes of Yb4As3 with temperature are confirmed to be beyond simple thermal broadening effects and related to the charge ordering effects. Although the change from the charge ordering temperature (Tt) down to about Tt/2 is consistent with a theoretical prediction, the change below it is rather unusual and may be ascribed to the incompleteness of the charge ordering effect. Spectral changes with Yb4Sb3-substitution are qualitatively discussed.

KW - 4f electron

KW - Charge ordering

KW - Correlated band

KW - Heavy fermion

KW - Long chain

KW - Short chain

KW - Structural phase transition

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