TY - JOUR
T1 - Effects of structure modulation on the magnetic properties in diluted magnetic semiconductor Li1+yZn0.9Mn0.1As1.0
AU - Shen, X.
AU - Deng, Z.
AU - Li, Z.
AU - Gu, B.
AU - He, L. H.
AU - Yao, Y.
AU - Jin, C. Q.
AU - Yu, R. C.
N1 - Publisher Copyright:
©2020 American Physical Society.
PY - 2020/9
Y1 - 2020/9
N2 - The emergence of spintronic applications has stimulated intense interest due to expectations for new functionalities and devices. However, in a I-II-V diluted magnetic semiconductor Li(Zn, Mn)As system as a corresponding material, the mechanism of the doping and ferromagnetism is not clear yet. Here, we used aberration-corrected scanning transmission electron microscopy to investigate the microstructures of the paramagnetic and ferromagnetic Li1+yZn1-xMnxAs (nominal composition: Li1.0Zn0.9Mn0.1As1.0 and Li1.1Zn0.9Mn0.1As1.0) compounds at atomic scale. Our results provide clear evidence that superstructures exist in a diluted magnetic semiconductor. We also reveal the origin of the modulated structure of the Li(Zn, Mn)As system. With the above studies, we indicate the relationship between the structure and magnetism, and investigate the charge and spin controlling mechanism in the diluted magnetic semiconductor. Our studies may provide a way to search for diluted magnetic semiconductors with novel and excellent properties.
AB - The emergence of spintronic applications has stimulated intense interest due to expectations for new functionalities and devices. However, in a I-II-V diluted magnetic semiconductor Li(Zn, Mn)As system as a corresponding material, the mechanism of the doping and ferromagnetism is not clear yet. Here, we used aberration-corrected scanning transmission electron microscopy to investigate the microstructures of the paramagnetic and ferromagnetic Li1+yZn1-xMnxAs (nominal composition: Li1.0Zn0.9Mn0.1As1.0 and Li1.1Zn0.9Mn0.1As1.0) compounds at atomic scale. Our results provide clear evidence that superstructures exist in a diluted magnetic semiconductor. We also reveal the origin of the modulated structure of the Li(Zn, Mn)As system. With the above studies, we indicate the relationship between the structure and magnetism, and investigate the charge and spin controlling mechanism in the diluted magnetic semiconductor. Our studies may provide a way to search for diluted magnetic semiconductors with novel and excellent properties.
UR - http://www.scopus.com/inward/record.url?scp=85092745321&partnerID=8YFLogxK
U2 - 10.1103/PhysRevMaterials.4.094412
DO - 10.1103/PhysRevMaterials.4.094412
M3 - Article
AN - SCOPUS:85092745321
SN - 2475-9953
VL - 4
JO - Physical Review Materials
JF - Physical Review Materials
IS - 9
M1 - 094412
ER -