Open AccessBand Jahn-Teller effects and Peierls Instability in IrTe2
Author(s) -
Daiki Ootsuki,
Sunseng Pyon,
Kazuhiro Kudo,
M. Nohara,
M. Horio,
T. Yoshida,
A. Fujimori,
Masashi Arita,
H. Anzai,
H. Namatame,
Masaki Takeuchi,
N. L. Saini,
T. Mizokawa
Publication year - 2013
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/428/1/012018
Subject(s) - jahn–teller effect , instability , condensed matter physics , materials science , physics , mechanics , quantum mechanics , ion
We report a photoemission spectroscopy study on IrTe2 which exhibits an interesting lattice distortion below 270 K. Ir 4f core-level photoemission spectrum is broadened in going from 300K to 40K. This result indicates the charge moderation of Ir 5d electrons. Angle-resolved photoemission spectroscopy(ARPES) result at 300K shows multi-band Fermi surfaces with six-fold symmetry which are basically consistent with band structure calculations. At the distorted phase, the inner Fermi surfaces become quasi one-dimensional Fermi surface due to the lattice distortion