Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T55: Correlated Electron Materials I
11:30 AM–2:30 PM,
Thursday, March 9, 2023
Room: Room 305
Sponsoring
Unit:
GMAG
Chair: Adam Aczel, Oak Ridge Nat'l Lab
Abstract: T55.00001 : Multipole polaron in the devil's staircase of CeSb
11:30 AM–11:42 AM
Presenter:
Yosuke Arai
(The University of Tokyo)
Authors:
Yosuke Arai
(The University of Tokyo)
Kenta Kuroda
(Hiroshima University)
Takuya Nomoto
(The University of Tokyo)
Zi How Tin
(Osaka University)
Shunsuke Sakuragi
(The University of Tokyo)
Cédric Bareille
(The University of Tokyo)
Shuntaro Akebi
(The University of Tokyo)
Kifu Kurokawa
(The University of Tokyo)
Yuto Kinoshita
(The University of Tokyo)
Weilu Zhang
(The University of Tokyo)
Shik Shin
(The University of Tokyo)
Masashi Tokunaga
(The University of Tokyo)
Hideaki Kitazawa
(National Institute for Materials Science)
Yoshinori Haga
(Japan Atomic Energy Agency)
Hiroyuki Suzuki
(The University of Tokyo)
Shigeki Miyasaka
(Osaka University)
Setsuko Tajima
(Osaka University)
Kazuaki Iwasa
(Ibaraki University)
Ryotaro Arita
(The University of Tokyo)
Takeshi Kondo
(The University of Tokyo)
Here, we examine the low-energy electronic structures of CeSb in the devil’s staircase, using laser angle-resolved photoemission spectroscopy, Raman spectroscopy, and neutron spectroscopy. We found a new type of electron–boson coupling, which leads to a unique quasiparticle state named the ‘multipole polaron’ [2]. This new coupling mediates between the itinerant electrons and the bosons constituted by the crystal-electric-field excitations of the localized 4f states.
[1] K. Kuroda, Y. Arai et al., Nat. Commun. 11, 2888 (2020). [2] Y. Arai et al., Nat. Mater. 21, 410 (2022).
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