论文标题
（SRIRO3）1/（srtio3）1个超级晶格的伪冬质正方形晶格的应变调节的Slater-mott跨界
Strain-modulated Slater-Mott crossover of pseudospin-half square-lattice in (SrIrO3)1/ (SrTiO3)1 superlattices
论文作者
论文摘要
我们报告了在（sriro3）1/（srtio3）1的超级晶格中实现的假柔性平方晶格的外延应变驱动的电子和抗磁磁调制。随着压缩应变的增加，我们发现低温绝缘行为通过相应的系统降低NEEL温度和交错力矩而受到强烈抑制。然而，尽管有这种抑制，该系统仍然在尿素过渡的上方较弱地绝缘。在较大的压缩应变下观察到金属性的出现，但仅在远远高于Néel跃迁的温度下。这些行为是Slater-mott交叉状态的特征，它提供了具有可调的中间耦合强度的独特的旋转式Hubbard Hamiltonian的实验模型系统。
We report on the epitaxial strain-driven electronic and antiferromagnetic modulations of a pseudospin-half square lattice realized in superlattices of (SrIrO3)1/(SrTiO3)1. With increasing compressive strain, we find the low-temperature insulating behavior to be strongly suppressed with a corresponding systematic reduction of both the Neel temperature and the staggered moment. However, despite such a suppression, the system remains weakly insulating above the Neel transition. The emergence of metallicity is observed under large compressive strain but only at temperatures far above the Néel transition. These behaviors are characteristics of the Slater-Mott crossover regime, providing a unique experimental model system of the spin-half Hubbard Hamiltonian with a tunable intermediate coupling strength.
