Search for massive Dirac state by NMR and transport measurements
Project/Area Number |
24654101
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
|
Research Institution | The University of Tokyo |
Principal Investigator |
Miyagawa Kazuya 東京大学, 工学(系)研究科(研究院), 助教 (90302760)
|
Project Period (FY) |
2012-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | ディラック電子系 / 有機導体 / 核磁気共鳴 / 輸送現象測定 / 輸送現象 / 電子相関 / 電荷秩序 / 圧力 |
Outline of Final Research Achievements |
Due to linear dispersion in band structure, a mass of carrier in Dirac Fermion state is expected to be zero. However, theoretical studies predict carrier get mass in some special cases. We investigate the electronic state of organic bulk masless Dirac Fermion system, a,q-(BEDT-TTF)2I3 by transport and NMR measurements. We found the different temperature dependence between lower pressure and higher pressure Dirac states in transport and NMR properties of a-(BEDT-TTF)2I3. We obtained the new information of Dirac state where it is believed that there is no pressure dependence of character of carrier.
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Report
(5 results)
Research Products
(27 results)