Te 5p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2

D. Ootsuki; T. Toriyama; M. Kobayashi; S. Pyon; K. Kudo; M. Nohara; K. Horiba; K. Ono; H. Kumigashira; T. Noda; T. Sugimoto; A. Fujimori; N. L. Saini; T. Konishi; Y. Ohta; T. Mizokawa

doi:10.1103/physrevb.89.104506

arXiv · 1312.0780

Te 5p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2

D. Ootsuki·T. Toriyama·M. Kobayashi·S. Pyon·K. Kudo·M. Nohara·K. Horiba·K. Ono·H. Kumigashira·T. Noda·T. Sugimoto·A. Fujimori·N. L. Saini·T. Konishi·Y. Ohta·T. Mizokawa

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Abstract

We have studied the nature of the three-dimensional multi-band electronic structure in the twodimensional triangular lattice Ir1-xPtxTe2 (x=0.05) superconductor using angle-resolved photoemission spectroscopy (ARPES), x-ray photoemission spectroscopy (XPS) and band structure calculation. ARPES results clearly show a cylindrical (almost two-dimensional) Fermi surface around the zone center. Near the zone boundary, the cylindrical Fermi surface is truncated into several pieces in a complicated manner with strong three-dimensionality. The XPS result and the band structure calculation indicate that the strong Te 5p-Te 5p hybridization between the IrTe2 triangular lattice layers is responsible for the three-dimensionality of the Fermi surfaces and the intervening of the Fermi surfaces observed by ARPES.

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D. Ootsuki, T. Toriyama, M. Kobayashi, S. Pyon, K. Kudo, M. Nohara, K. Horiba, K. Ono, H. Kumigashira, T. Noda, T. Sugimoto, A. Fujimori, N. L. Saini, T. Konishi, Y. Ohta, T. Mizokawa. 2013-12-03. Te 5p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2. https://doi.org/10.1103/physrevb.89.104506

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