Blueshift of magneto-optical spectra and ferromagnetic ordering in (GaMn)As/AlAs ultrathin (<5 nm) heterostructures
Blueshift of magneto-optical spectra and ferromagnetic ordering in (GaMn)As/AlAs ultrathin (<5 nm) heterostructures
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(GaMn)As/AlAs 超薄 (<5 nm) 异质结构中的磁光光谱蓝移和铁磁排序
DOI：
10.1063/1.1447199
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发表时间：
2002
影响因子：
3.2
通讯作者：
Masaaki Tanaka
中科院分区：
文献类型：
--
作者：
H. Shimizu;Masaaki Tanaka
我们研究了(GaMn)As/AlAs超薄异质结的透射谱。在(GaMn)As厚度d小于5 nm的异质结中，随着d的减小，磁光光谱显著蓝移，而厚度较厚的(GaMn)As(>；12 nm)异质结表现出与体相(GaMn)As相似的磁光光谱，并对蓝移的机制进行了讨论。此外，我们还观察到了转变温度为70K的超薄(GaMn)As(d=2和5 nm)样品中的铁磁有序。
We have studied transmission magneto-optical spectra of (GaMn)As/AlAs ultrathin heterostructures. In the heterostructures whose (GaMn)As thickness d is thinner than 5 nm, the magneto-optical spectra are significantly blueshifted with the decrease of d, whereas the heterostructures with thicker (GaMn)As (>12 nm) show magneto-optical spectra similar to that of bulk (GaMn)As, and the mechanisms of the blueshift are discussed. Furthermore, we have observed ferromagnetic ordering even in the ultrathin (GaMn)As (d=2 and 5 nm) samples with their transition temperature of 70 K.
影响因子：
8.6
作者：
Tanaka, M;Higo, Y
通讯作者：
Higo, Y