Theory of Dirac fermion magnetoresistance in organic conductor

有机导体中狄拉克费米子磁阻理论

• 批准号: 21740252
• 负责人: MORINARI Takao
• 金额: $ 1.91万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740252/
• 关键词: 分子性固体; 有機導体; ディラック電子; 磁気抵抗; 圧力効果; 面間磁気抵抗; ランダウ準位

Fundamental research on electronic properties of various systems provides us the key for the development of modern technology. In this research project, we have studied an organic compound,α-(BEDT-TTF)_2I_3, where electrons obey the relativistic Dirac equation under pressure in spite of the fact that the velocity of electrons is much slower than the speed of light. We have formulated the theory describing the electronic transport properties of this system under magnetic field, and have explained anomalous temperature and magnetic field dependence of the resistivity.

对各种体系电子性质的基础研究为现代科技的发展提供了关键。在本研究项目中，我们研究了一种有机化合物α-（BEDT-TTF）_2I_3，其中电子在压力下服从相对论狄拉克方程，尽管电子的速度比光速慢得多。我们建立了描述该体系在磁场作用下的电子输运性质的理论，并解释了电阻率与温度和磁场的反常关系。