We report an angle-resolved photoemission spectroscopy (ARPES) study on IrTe2 which exhibits an interesting lattice distortion below 270 K and becomes triangular lattice superconductors by suppressing the distortion via chemical substitution or intercalation. ARPES results at 300 K show multi-band Fermi surfaces with six-fold symmetry which are basically consistent with band structure calculations. At 20 K in the distorted phase, topology of the inner Fermi surfaces is strongly modified by the lattice distortion. The Fermi surface reconstruction by the distortion depends on the orbital character of the Fermi surfaces, suggesting importance of Ir 5d and/or Te 5p orbital symmetry breaking.
Electronic Structure Reconstruction by Orbital Symmetry Breaking in IrTe2 / Daiki, Ootsuki; Sunseng, Pyon; Kazutaka, Kudo; Minoru, Nohara; Masafumi, Horio; Teppei, Yoshida; Atsushi, Fujimori; Masashi, Arita; Hiroaki, Anzai; Hirofumi, Namatame; Masaki, Taniguchi; Saini, Naurang Lal; Takashi, Mizokawa. - In: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN. - ISSN 0031-9015. - 82:9(2013), p. 093704. [10.7566/jpsj.82.093704]
Electronic Structure Reconstruction by Orbital Symmetry Breaking in IrTe2
SAINI, Naurang Lal;
2013
Abstract
We report an angle-resolved photoemission spectroscopy (ARPES) study on IrTe2 which exhibits an interesting lattice distortion below 270 K and becomes triangular lattice superconductors by suppressing the distortion via chemical substitution or intercalation. ARPES results at 300 K show multi-band Fermi surfaces with six-fold symmetry which are basically consistent with band structure calculations. At 20 K in the distorted phase, topology of the inner Fermi surfaces is strongly modified by the lattice distortion. The Fermi surface reconstruction by the distortion depends on the orbital character of the Fermi surfaces, suggesting importance of Ir 5d and/or Te 5p orbital symmetry breaking.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
