论文标题
动态的时间反转和反转对称性破坏，尺寸跨界和手性异常，$α$ - （bedt-ttf）$ _ 2 $ i $ _3 $
Dynamical time-reversal and inversion symmetry breaking, dimensional crossover, and chiral anomaly in $α$-(BEDT-TTF)$_2$I$_3$
论文作者
论文摘要
在大多数狄拉克半学分中，据信时反转和反转对称性在其稳定性中起着至关重要的作用。我们证明，这些对称性在有机导体$α$ - （bedt-ttf）$ _ 2 $ i $ _3 $的情况下破坏了这些对称性。该系统是连贯的层间隧道训练机中的三维II型DIRAC半学。当将磁场调谐到层间隧道方向时，预计将在磁磁性中观察到手性异常。我们的结果表明，$α$ - （bedt-ttf）$ _ 2 $ i $ _3 $是探索手性异常与强相关性和/或维度之间相互作用的有用平台。
In most Dirac semimetals, time-reversal and inversion symmetries are believed to play a crucial role in their stability. We demonstrate that these symmetries are broken in Dirac fermions in the organic conductor $α$-(BEDT-TTF)$_2$I$_3$ due to the strong electronic correlation. The system is a three-dimensional type-II Dirac semimetal in the coherent inter-layer tunneling regime. A chiral anomaly is predicted to be observed in the magnetoresistance when the magnetic field is tuned to the inter-layer tunneling direction. Our result suggests that $α$-(BEDT-TTF)$_2$I$_3$ is a useful platform to explore the interplay between the chiral anomaly and the strong correlation and/or dimensionality.
