论文标题
通过化学压在单层铁果生中调整量子磁磁性和D波超导性
Tuning quantum paramagnetism and d-wave superconductivity in single-layer iron chalcogenides by chemical pressure
论文作者
论文摘要
通过将s替换为单层FESE/SRTIO3，化学压可用于调整其顺磁性状态，该态被建模为自旋刺激态的不一致的叠加。所得的电子带类似于有序的棋盘抗铁磁结构，与角度分辨光发射光谱测量相一致。扫描隧道光谱显示出一个从U形的FESE变成尺寸降低的FES的差距，归因于D-Wave超导状态，一旦缝隙大小小于有效的旋转轨耦合。
By substituting S into single-layer FeSe/SrTiO3, chemical pressure is applied to tune its paramagnetic state that is modeled as an incoherent superposition of spin-spiral states. The resulting electronic bands resemble an ordered checkerboard antiferromagnetic structure, consistent with angle-resolved photoemission spectroscopy measurements. Scanning tunneling spectroscopy reveals a gap evolving from U-shaped for FeSe to V-shaped for FeS with decreasing size, attributed to a d-wave superconducting state for which nodes emerge once the gap size is smaller than the effective spin-orbit coupling.
