The electronic structure of the high-symmetry perovskite iridate Ba

S. Moser, L. Moreschini, A. Ebrahimi, B. Dalla Piazza, M. Isobe, H. Okabe, J. Akimitsu, V. V. Mazurenko, K. S. Kim, A. Bostwick, E. Rotenberg, J. Chang, H. M. Rønnow, M. Grioni

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31 Citations (Scopus)

Abstract

We report angle-resolved photoemission (ARPES) measurements,density functional and model tight-binding calculations on (Ba-214),an antiferromagnetic insulator.Ba-214 does not exhibit the rotational distortion of the Iroctahedra that is present in its sister compound (Sr-214),and is therefore an attractive reference material to study the electronic structure of layered iridates.We find that the band structures of Ba-214 and Sr-214 are qualitatively similar, hinting at the predominant role of the spin-orbit interaction in these materials.Temperature-dependent ARPES data show that the energy gap persists well above TN, and favor a Mott over a Slater scenario for this compound.

Original languageEnglish
Article number013008
JournalNew Journal of Physics
Volume16
DOIs
Publication statusPublished - 2014 Jan

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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