Prasad Vinod, Arora Monika
Department of Physics, Swami Shraddhanand College, University of Delhi, Delhi, 110036, India.
Department of Mathematics, Miranda House, University of Delhi, Delhi, 110007, India.
Sci Rep. 2023 Sep 19;13(1):15486. doi: 10.1038/s41598-023-42417-2.
We present the study of the SiGe quantum ring (QR) modeled by an anharmonic axially symmetric potential with a centrifugal core in the effective mass approximation. We show how the femtosecond laser pulses (FLPs) can be used efficiently for controlling the induced current and magnetic field. We have compared the strength of induced currents and magnetic fields with and without pulsed laser which shows a substantial change. The spin-orbit interaction (SOI) and Zeeman energy show a massive impact on the generation and enhancement of these induced current and magnetic fields. These induced currents and magnetic fields have many applications in interdisciplinary areas. We have shown that the SOI presence with the FLP fields while competing with the confinement strength lowers the strength of the induced current and field.
我们展示了在有效质量近似下，由具有离心核心的非谐轴对称势建模的硅锗量子环（QR）的研究。我们展示了飞秒激光脉冲（FLP）如何能有效地用于控制感应电流和磁场。我们比较了有脉冲激光和无脉冲激光时感应电流和磁场的强度，结果显示有显著变化。自旋轨道相互作用（SOI）和塞曼能量对这些感应电流和磁场的产生及增强有巨大影响。这些感应电流和磁场在跨学科领域有许多应用。我们已经表明，在与限制强度竞争时，FLP场存在的SOI会降低感应电流和场的强度。
