Influence of local magnetization on acceptor-bound complex state in Hg1−xMnxTe single crystals
Influence of local magnetization on acceptor-bound complex state in Hg1−xMnxTe single crystals
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DOI：
10.1063/1.4926976
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发表时间：
2015-07
影响因子：
3.2
通讯作者：
Liangqing Zhu;J. Shao;Liangqing Zhu;Xiren Chen;Zhen Qi;T. Lin;W. Bai;Xiaodong Tang;J. Chu
中科院分区：
文献类型：
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作者：
Liangqing Zhu;J. Shao;Liangqing Zhu;Xiren Chen;Zhen Qi;T. Lin;W. Bai;Xiaodong Tang;J. Chu
我们对一系列p型Hg 1-xMnxTe（0.20≤x≤0.26）单晶进行了变温磁测量和不同几何尺寸的红外光致发光（PL）测量。观察到受子束缚磁极化子（A0 BMP）的光致发光特征的演化，并发现零场自旋分裂。结果表明，A0 BMP的局部自发磁化的直接证据。与Ditel-Spalek模型的比较表明，除了涨落和集体区域外，A0 BMP在低温下由于Hg 1 −xMnxTe中自旋玻璃态的形成而表现出一种新的区域。与A0 BMP结合的激子的解离能（（A0，X）BMP）随温度迅速变化，（A0，X）BMP的解离能与A0 BMP的结合能之比大于经典的A0 X值，不再是常数，这打破了Haynes规则.自由激子局域化过程有助于增强局部磁化的（A0，X）BMP通过…
We performed temperature-dependent magnetic measurements and infrared photoluminescence (PL) measurements in various geometries on a series of p-type Hg1–xMnxTe single crystals ( 0.20≤x≤0.26). Evolution of PL features was observed, and zero-field spin splitting was identified for the acceptor-bound magnetic polaron (A0BMP). The results show direct evidence for local spontaneous magnetization of the A0BMP. Comparison with the Ditel–Spalek model indicates that besides the fluctuation and collective regimes, the A0BMP exhibits a new regime at low temperatures owing to the formation of the spin-glass state in Hg1−xMnxTe. The dissociation energy of the exciton bound to the A0BMP ((A0,X)BMP) varied rapidly with temperature, and the ratio of the dissociation energy of the (A0,X)BMP to the binding energy of the A0BMP was larger than the classical value of the A0X and no longer a constant, which breaks the Haynes rule. The free exciton localization process helps enhance the local magnetization of the (A0,X)BMP by ...