Temperature-dependent electronic structure of EuNi2P2 revealed by angle-resolved photoemission spectroscopy

H. Anzai, K. Ichiki, E. F. Schwier, H. Iwasawa, K. Shimada, H. Namatame, M. Taniguchi, A. Mitsuda, H. Wada, K. Mimura

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We studied the electronic structure of EuNi2P2, which exhibits both heavy-fermion and mixed-valence behaviors, using angle-resolved photoemission spectroscopy. Multiple Ni 3d bands were observed near the Fermi energy, and one of them forms a hole-like Fermi surface around the X point of the Brillouin zone. We also found that the spectral weight of the Ni 3d states is rapidly enhanced with decreasing temperature, which is consistent with the temperature dependence of the mean valence of Eu ions. Our results thus demonstrate hybridization between the Ni 3d and Eu 4f electrons in EuNi2P2.

Original languageEnglish
Article number012006
JournalJournal of Physics: Conference Series
Volume807
Issue number1
DOIs
Publication statusPublished - Apr 6 2017
Event18th International Conference on Strongly Correlated Electron Systems, SCES 2016 - Hangzhou, China
Duration: May 9 2016May 13 2016

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photoelectric emission
electronic structure
valence
Brillouin zones
spectroscopy
Fermi surfaces
fermions
temperature dependence
temperature
ions
electrons
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Temperature-dependent electronic structure of EuNi2P2 revealed by angle-resolved photoemission spectroscopy. / Anzai, H.; Ichiki, K.; Schwier, E. F.; Iwasawa, H.; Shimada, K.; Namatame, H.; Taniguchi, M.; Mitsuda, A.; Wada, H.; Mimura, K.

In: Journal of Physics: Conference Series, Vol. 807, No. 1, 012006, 06.04.2017.

Research output: Contribution to journalConference article

Anzai, H. ; Ichiki, K. ; Schwier, E. F. ; Iwasawa, H. ; Shimada, K. ; Namatame, H. ; Taniguchi, M. ; Mitsuda, A. ; Wada, H. ; Mimura, K. / Temperature-dependent electronic structure of EuNi2P2 revealed by angle-resolved photoemission spectroscopy. In: Journal of Physics: Conference Series. 2017 ; Vol. 807, No. 1.
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abstract = "We studied the electronic structure of EuNi2P2, which exhibits both heavy-fermion and mixed-valence behaviors, using angle-resolved photoemission spectroscopy. Multiple Ni 3d bands were observed near the Fermi energy, and one of them forms a hole-like Fermi surface around the X point of the Brillouin zone. We also found that the spectral weight of the Ni 3d states is rapidly enhanced with decreasing temperature, which is consistent with the temperature dependence of the mean valence of Eu ions. Our results thus demonstrate hybridization between the Ni 3d and Eu 4f electrons in EuNi2P2.",
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AU - Anzai, H.

AU - Ichiki, K.

AU - Schwier, E. F.

AU - Iwasawa, H.

AU - Shimada, K.

AU - Namatame, H.

AU - Taniguchi, M.

AU - Mitsuda, A.

AU - Wada, H.

AU - Mimura, K.

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AB - We studied the electronic structure of EuNi2P2, which exhibits both heavy-fermion and mixed-valence behaviors, using angle-resolved photoemission spectroscopy. Multiple Ni 3d bands were observed near the Fermi energy, and one of them forms a hole-like Fermi surface around the X point of the Brillouin zone. We also found that the spectral weight of the Ni 3d states is rapidly enhanced with decreasing temperature, which is consistent with the temperature dependence of the mean valence of Eu ions. Our results thus demonstrate hybridization between the Ni 3d and Eu 4f electrons in EuNi2P2.

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