首页|Metal-to-insulator transition in platinum group compounds
Metal-to-insulator transition in platinum group compounds
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The metal-to-insulator transition(MIT)as usu-ally achieved in 3d-orbital transitional metal(TM)com-pounds opens up a new paradigm in correlated electronics via triggering abrupt variations in their transportation properties.Compared to such 3d-orbital TM compounds,the MIT within the platinum group(Pg)element com-pounds based on the 4d-and 5d-orbital configurations is more complicated,owing to their elevation in the spin-orbit coupling and meanwhile weakened intra-atomic Coulomb repulsions.This brings in a new freedom to regulate the balance in their metallic or semiconductive orbital configurations,while their MIT properties can be potentially combined with their spintronic properties to enable new electronic applications.Herein,we review the electronic transport and MIT behaviors within the existing family of Pg-containing compounds,particularly those showing first-order MIT behaviors that can be useful in correlated electronics.It is also hoped that summarizing the presently reported Pg-containing MIT compounds will lead to the discovery of more new material families and/or new mechanisms associated with the Pg-containing compounds showing MIT properties.
Metal-to-insulator transitionPlatinum group compoundsElectron correlationSpin-orbital coupling
Yu-Xuan Xia、Jian-Gang He、Nuo-Fu Chen、Ji-Kun Chen
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School of New Energy,North China Electric Power University,Beijing 102206,China
School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China
Key Laboratory of Advanced Materials and Devices for Post-Moore Chips(Ministry of Education),School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China
National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaXiao Mi scholar project