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2016 Fiscal Year Final Research Report

Strong spin-orbit interaction and novel electronic phases in heavy 5d transition metal oxides

Research Project

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Project/Area Number 24224010
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

Hidenori Takagi  東京大学, 大学院理学系研究科(理学部), 教授 (40187935)

Co-Investigator(Kenkyū-buntansha) 有馬 孝尚  東京大学, 新領域創成科学研究科, 教授 (90232066)
山本 文子  国立研究開発法人理化学研究所, 無機電子複雑系研究チーム, 基幹研究所研究員 (50398898)
Co-Investigator(Renkei-kenkyūsha) TANIGUCHI KOUJI  東北大学金属材料研究所, 錯体物性化学研究部門, 准教授 (30400427)
OHSUMI HIROYUKI  国立研究開発法人理化学研究所, 放射光科学総合研究センター, 専任研究員 (90360825)
MATSUNO JOBU  国立研究開発法人理化学研究所, 創発物性科学研究センター, 専任研究員 (00443028)
ONODA SHIGEKI  国立研究開発法人理化学研究所, 古崎物性理論研究室, 専任研究員 (70455335)
KITAGAWA KENTARO  東京大学, 大学院理学系研究科, 講師 (90567661)
HIRAOKA NAOKA  東京大学, 大学院理学系研究科, 助教 (40758827)
Research Collaborator TAKAYAMA TOMOHIRO  Max Planck Institute for Solid State Research, Department of Quantum Materials, Scientist
Project Period (FY) 2012-05-31 – 2017-03-31
Keywordsスピン軌道相互作用 / 電子相関 / 5d遷移金属酸化物 / イリジウム / スピン軌道モット絶縁体 / 相関トポロジカル半金属 / トポロジカル量子スピン液体 / スピン流検出
Outline of Final Research Achievements

We had explored the exotic electronic phases produced by an interplay between electron correlations and in 5d transition metal oxides and physics behind them. Spin-orbit coupling induced Heisenberg magnetism, Dirac semimetal-magnetic insulator transition and competition between spin-orbit coupling and orbital ordering were revealed. New compounds with a quantum spin liquid state, an exotic topological phase, an excitonic insulating state and spin detection function were discovered/designed.

Free Research Field

物性物理実験、固体化学

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Published: 2018-03-22  

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