Abstract
We investigate the variation of charge dynamics upon the metal-insulator transition for perovskite SrIr1−xSnxO3 by employing the optical spectroscopy. The Dirac semimetal of SrIrO3 turns into the antiferromagnetic insulator with a gap of 0.1 eV by the Sn-substitution, accompanying the reconstruction of electronic structure on an energy scale of 1 eV. The spectral intensity of optical excitation between Jeff = 1=2-orbitals is significantly reduced with increasing x, while that between the Jeff = 3=2- and 1=2-orbital shows merely moderate x-dependence. We anticipate that the substituted Sn significantly renormalizes the effective bandwidth of Jeff = 1=2-orbital while modestly changing the Jeff = 3=2-orbital.
Original language | English |
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Article number | 123706 |
Journal | Journal of the Physical Society of Japan |
Volume | 87 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2018 Jan 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)