论文标题
钛酸腹酯中自旋轨道相互作用和电子相关的影响
Effects of spin-orbit interaction and electron correlations in strontium titanate
论文作者
论文摘要
我们表明，srtio $ _3 $的传统带中的Bloch状态来自于高度各向异性跳跃之间的相互作用，该次数源自ti $ t_ {2g} $ orbitals和Spin-Orbitals和旋转轨道耦合，使这些轨道混合了这些轨道。由于一个主要轴之一的几乎平坦的波段特性，在足够高的掺杂这些Bloch态在电子相互作用方面变得不稳定，从而导致了Mott-like单线相关性。这些发现可能与Srtio $ _3 $的异常电子特性有关，包括其不寻常的超导性。
We show that the Bloch states in the conduction band of SrTiO$_3$ arise from the interplay between highly anisotropic hopping in sub-bands derived from the Ti $t_{2g}$ orbitals and spin-orbit coupling that mixes these orbitals. Because of the nearly flat-band characteristics for one of the principal axes, at sufficiently high doping these Bloch states become unstable with respect to electron interactions, resulting in Mott-like singlet correlations. These findings may be relevant to the anomalous electronic properties of SrTiO$_3$, including its unusual superconductivity.
