Arsenene nanoribbon edge-resolved strong magnetism
Arsenene nanoribbon edge-resolved strong magnetism
复制标题
砷烯纳米带边缘分辨强磁性
DOI：
10.1039/c8cp04891f
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发表时间：
2018
影响因子：
3.3
通讯作者：
Sun Chang Q.
中科院分区：
文献类型：
--
作者：
Wang Sanmei;Zhang Xi;Huang Yongli;Sun Chang Q.
我们从边缘量子俘获的角度提出了一种在六方相砷纳米带（AsNR）中诱导高达10.92 emu g−1强磁性的机制。键序-长度-强度相关（bolls）理论与密度泛函理论（DFT）计算结果的一致性验证了：(1)9.54%的边键收缩加深了AsNR的边电位阱，(2)从内部区域向边缘转移了0.06 e−的净电荷；（iii）边缘量子阱极化了未配对电子，净自旋（反铁磁性或铁磁性取决于宽度）定位在锯齿形边缘。这一发现揭示了AsNR在磁存储器件中的应用。
We proposed a mechanism to induce strong magnetism of up to 10.92 emu g−1 in hexagonal-phase arsenene nanoribbon (AsNR) from the perspective of edge quantum entrapment. Consistency between bond-order–length–strength correlation (BOLS) theory and density functional theory (DFT) calculations verified that: (i) the edge bond contraction of 9.54% deepened the edge potential well of AsNR, (ii) a net charge of 0.06 e− transferred from the inner region to the edge; and (iii) the edge quantum well polarized the unpaired electron and the net spin (antiferromagnetic or ferromagnetic depending on the width) is localized at the zigzag edge. The finding sheds a light on applications of AsNR in magnetic storage devices.