论文标题
单层过渡金属二核苷中的磁含量和磁性 - 甲状腺的相干响应理论
Theory of the Coherent Response of Magneto-Excitons and Magneto-Biexcitons in Monolayer Transition Metal Dichalcogenides
论文作者
论文摘要
高质量，电荷中性单层过渡金属二分裂基质的最新可访问性在同质极限下具有狭窄的激子宽度，为研究激发型多体相互作用提供了理想的平台。特别是，尚未考虑到迄今尚未考虑通过应用外部磁场来操纵相干激子相互作用，从而控制超快非线性光学响应。我们通过在平面外，平面内和倾斜磁场的情况下以光学激发的相干极限提出非线性微观理论来解决这一差异。具体而言，我们探索了磁场诱导的激子和Biexciton精细结构，并根据运动形式主义的Heisenberg方程计算其振荡器强度。我们对泵探针光谱的显微镜评估可以解释和预测未来波浪混合实验中的相干特征。
The recent accessibility of high quality, charge neutral monolayer transition metal dichalcogenides with narrow exciton linewidths at the homogeneous limit provides an ideal platform to study excitonic many-body interactions. In particular, the possibility to manipulate coherent exciton-exciton interactions, which govern the ultrafast nonlinear optical response, by applying an external magnetic field has not been considered so far. We address this discrepancy by presenting a nonlinear microscopic theory in the coherent limit for optical excitations in the presence of out-of-plane, in-plane, and tilted magnetic fields. Specifically, we explore the magnetic-field-induced exciton and biexciton fine structure and calculate their oscillator strengths based on a Heisenberg equations of motion formalism. Our microscopic evaluations of pump-probe spectra allow to interpret and predict coherent signatures in future wave-mixing experiments.
