量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum and Radiological Science and Technology.
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The pyrochlore iridate In2Ir2O7 is a Jeff = 1/2 Mott insulator with frustrated magnetism. Despite the large trigonal distortion, only a small admixture of Jeff = 3/2 component in the Jeff = 1/2 bands is observed as compared with other pyrochlore iridates A2Ir2O7 (A = trivalent cation). We argue that the reduced intersite hopping between the Jeff = 1/2 and the Jeff = 3/2 manifold, due to the large trigonal distortion and the covalent character of In-O bonds, plays a predominant role in the distinct behavior of In2Ir2O7. Such effect of the intersite hopping should not be dismissed in the local physics of Jeff = 1/2 Mott insulators.
Almost pure Jeff = 1/2 Mott state of In2Ir2O7 in the limit of reduced intersite hopping
