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Tuning the dynamics of Bound Magnetic Polaron in asymmetric Cd1-x1Mnx1Te/Cd1-x2Mnx2Te Semimagnetic Concentric Double Quantum Rings: Through magnetic ion concentration and magnetic field
Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2020-10-07 , DOI: 10.1016/j.physb.2020.412615
I. Janet Sherly , P. Nithiananthi

Rigorous analysis on the formation of Bound Magnetic Polaron (BMP) in Cd1-x1Mnx1Te/Cd1-x2Mnx2Te Semimagnetic Concentric Double Quantum Ring (SCDQR) for various magnetic field and ring dimensions has been made by estimating Spin Polaronic Shift (SPS) using variational technique. The concentration of Mn2+ has been varied in both the ring and barrier material to estimate the shift in the BMP formation from the inner ring to outer ring with respect to the distribution of Mn2+ ions and impurity location. It is found that the SPS of Inner Ring Centered Donor (IRD) and Outer Ring Centered Donor (ORD) are opposite to each other at lower concentrations. Strengthening the magnetic field and increasing the concentration of magnetic ions increases the SPS because of the large magnetic ordering. Thus the concentration of magnetic ions and magnetic field is of paramount importance in determining the BMP formation and its usage in devices.



中文翻译:

调整不对称Cd 1-x1 Mn x1 Te / Cd 1-x2 Mn x2 Te中的束缚磁极化子的动力学:通过磁离子浓度和磁场

通过估计自旋极化子,对Cd 1-x1 Mn x1 Te / Cd 1-x2 Mn x2 Te半磁性同心双量子环(SCDQR)中的各种磁场和环尺寸进行了严格的束缚磁极化子(BMP)形成的严格分析。使用变分技术的移位(SPS)。环和阻挡层材料中的Mn 2+浓度均发生了变化,以估计BMP形成相对于Mn 2+的分布从内环到外环的变化离子和杂质位置。发现内环中心供体(IRD)和外环中心供体(ORD)的SPS在较低浓度下彼此相对。由于大的磁排序,加强磁场和增加磁离子的浓度会增加SPS。因此,在确定BMP的形成及其在设备中的用途时,磁性离子和磁场的浓度至关重要。

更新日期:2020-10-29
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