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.
Band Jahn-Teller effects and Peierls instability in IrTe2 / D., Ootsuki; S., Pyon; K., Kudo; M., Nohara; M., Horio; T., Yoshida; A., Fujimori; M., Arita; H., Anzai; H., Namatame; M., Taniguchi; Saini, Naurang Lal; T., Mizokawa. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 428:1(2013), p. 012018. (Intervento presentato al convegno 21st International Symposium on the Jahn-Teller Effect 2012 tenutosi a Tsukuba nel 26 August 2012 through 31 August 2012) [10.1088/1742-6596/428/1/012018].
Band Jahn-Teller effects and Peierls instability in IrTe2
SAINI, Naurang Lal;
2013
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
