Coexistence of Bloch electrons and glassy electrons in Ca10(Ir4As8)(Fe2- xIrxAs2)5 revealed by angle-resolved photoemission spectroscopy

K. Sawada, D. Ootsuki, Kazutaka Kudo, D. Mitsuoka, Minoru Nohara, T. Noda, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, N. L. Saini, T. Mizokawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Angle-resolved photoemission spectroscopy of Ca10(Ir4As8)(Fe2-xIrxAs2)5 shows that the Fe 3d electrons in the FeAs layer form the holelike Fermi pocket at the zone center and the electronlike Fermi pockets at the zone corners as commonly seen in various Fe-based superconductors. The FeAs layer is heavily electron doped and has relatively good two dimensionality. On the other hand, the Ir 5d electrons are metallic and glassy probably due to atomic disorder related to the Ir 5d orbital instability. Ca10(Ir4As8)(Fe2-xIrxAs2)5 exhibits a unique electronic state where the Bloch electrons in the FeAs layer coexist with the glassy electrons in the Ir4As8 layer.

Original languageEnglish
Article number220508
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number22
DOIs
Publication statusPublished - Jun 25 2014

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Photoelectron spectroscopy
photoelectric emission
Electrons
spectroscopy
electrons
Electronic states
disorders
orbitals
electronics

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Coexistence of Bloch electrons and glassy electrons in Ca10(Ir4As8)(Fe2- xIrxAs2)5 revealed by angle-resolved photoemission spectroscopy. / Sawada, K.; Ootsuki, D.; Kudo, Kazutaka; Mitsuoka, D.; Nohara, Minoru; Noda, T.; Horiba, K.; Kobayashi, M.; Ono, K.; Kumigashira, H.; Saini, N. L.; Mizokawa, T.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 89, No. 22, 220508, 25.06.2014.

Research output: Contribution to journalArticle

Sawada, K. ; Ootsuki, D. ; Kudo, Kazutaka ; Mitsuoka, D. ; Nohara, Minoru ; Noda, T. ; Horiba, K. ; Kobayashi, M. ; Ono, K. ; Kumigashira, H. ; Saini, N. L. ; Mizokawa, T. / Coexistence of Bloch electrons and glassy electrons in Ca10(Ir4As8)(Fe2- xIrxAs2)5 revealed by angle-resolved photoemission spectroscopy. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 89, No. 22.
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abstract = "Angle-resolved photoemission spectroscopy of Ca10(Ir4As8)(Fe2-xIrxAs2)5 shows that the Fe 3d electrons in the FeAs layer form the holelike Fermi pocket at the zone center and the electronlike Fermi pockets at the zone corners as commonly seen in various Fe-based superconductors. The FeAs layer is heavily electron doped and has relatively good two dimensionality. On the other hand, the Ir 5d electrons are metallic and glassy probably due to atomic disorder related to the Ir 5d orbital instability. Ca10(Ir4As8)(Fe2-xIrxAs2)5 exhibits a unique electronic state where the Bloch electrons in the FeAs layer coexist with the glassy electrons in the Ir4As8 layer.",
author = "K. Sawada and D. Ootsuki and Kazutaka Kudo and D. Mitsuoka and Minoru Nohara and T. Noda and K. Horiba and M. Kobayashi and K. Ono and H. Kumigashira and Saini, {N. L.} and T. Mizokawa",
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AU - Ootsuki, D.

AU - Kudo, Kazutaka

AU - Mitsuoka, D.

AU - Nohara, Minoru

AU - Noda, T.

AU - Horiba, K.

AU - Kobayashi, M.

AU - Ono, K.

AU - Kumigashira, H.

AU - Saini, N. L.

AU - Mizokawa, T.

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AB - Angle-resolved photoemission spectroscopy of Ca10(Ir4As8)(Fe2-xIrxAs2)5 shows that the Fe 3d electrons in the FeAs layer form the holelike Fermi pocket at the zone center and the electronlike Fermi pockets at the zone corners as commonly seen in various Fe-based superconductors. The FeAs layer is heavily electron doped and has relatively good two dimensionality. On the other hand, the Ir 5d electrons are metallic and glassy probably due to atomic disorder related to the Ir 5d orbital instability. Ca10(Ir4As8)(Fe2-xIrxAs2)5 exhibits a unique electronic state where the Bloch electrons in the FeAs layer coexist with the glassy electrons in the Ir4As8 layer.

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