论文标题
Cr $ _2 $ ge $ _2 $ te $ _6 $单晶
Polaronic Conductivity in Cr$_2$Ge$_2$Te$_6$ Single Crystals
论文作者
论文摘要
固有的，二维（2D）铁磁半导体是旋转电荷转换应用的重要类别。 Cr $ _2 $ ge $ _2 $ te $ _6 $在低温温度下保留双层中的远程磁性订单，并显示出相当大的磁各向异性的复杂磁相互作用。在这里，我们进行了一系列结构，磁性，X射线散射，电子，热传输和第一原理计算研究，这些研究表明，CR $ _2 $ _2 $ ge $ _2 $ _2 $ _6 $中的局部电子电荷载体是由周围的lattice穿着的，并且通过跳跃涉及Polaronic Transport，这是对磁晶型AnisocryStalline anisosopropy的详细信息。这为操纵CR $ _2 $ ge $ _2 $ _2 $ te $ _6 $的电荷运输的可能性开放，该设备是通过电子波和基于旋转轨道耦合的北极星物业的剪裁。
Intrinsic, two-dimensional (2D) ferromagnetic semiconductors are an important class of materials for spin-charge conversion applications. Cr$_2$Ge$_2$Te$_6$ retains long-range magnetic order in bilayer at cryogenic temperatures and shows complex magnetic interactions with considerable magnetic anisotropy. Here, we performed a series of structural, magnetic, X-ray scattering, electronic, thermal transport and first-principles calculation studies which reveal that localized electronic charge carriers in Cr$_2$Ge$_2$Te$_6$ are dressed by surrounding lattice and are involved in polaronic transport via hopping that is sensitive on details of magnetocrystalline anisotropy. This opens possibility for manipulation of charge transport in Cr$_2$Ge$_2$Te$_6$ - based devices by electron-phonon- and spin-orbit coupling-based tailoring of polaron properties.
