Development of orbital-resolved NMR method and observation of orbital states

2014 Fiscal Year Final Research Report

• Project/Area Number: 25610092
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Nagoya University
• Principal Investigator: ITOH Masayuki 名古屋大学, 理学(系)研究科(研究院), 教授 (90176363)
• Research Collaborator: SHIMIZU Yasuhiro 名古屋大学, 大学院理学研究科, 講師 (00415184)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 軌道分解核磁気共鳴法 / 電子軌道 / 電子占有率 / 異方的超微細相互作用 / 電気四重極モーメント / 遷移金属酸化物 / バナジウム酸化物 / クロム酸化物

Outline of Final Research Achievements

Novel physical properties due to orbital degrees of freedom have been found in 3d transition metal oxides. We have developed a method called the angle-resolved nuclear magnetic resonance to study each electron contribution to the physical properties. Utilizing the anisotropic hyperfine interaction between a nucleus and the 3d electrons, we obtained the 3d electron occupation number and magnetic susceptibility of each orbital in several vanadium and chromium oxides and showed that this method is useful for revealing the orbital states.

Free Research Field

強相関電子系物理学