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arXiv 2001.06941cond-mat.mtrl-sci
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钒掺杂WSe2半导体中长程磁序的门调制

Gate modulation of the long-range magnetic order in a vanadium-doped WSe2 semiconductor

Dinh Loc Duong, Seong-Gon Kim, Young Hee Lee

摘要:

我们证明了栅极的可调谐性的长程磁性顺序在p型V掺杂的WSe 2单层使用从头计算。我们发现,在一个低的V掺杂浓度的限制,长程铁磁有序增强通过增加空穴密度。相反,短程反铁磁秩序表现在高电子密度的p型V掺杂浓度的充分补偿。空穴介导的长程磁交换为~70 meV,因此强烈表明室温下V掺杂的WSe 2具有铁磁性。我们的研究结果在V掺杂的WSe 2的电荷和自旋序之间的强耦合提供了足够的空间,多功能的门可调自旋电子学。

英文摘要:

We demonstrate the gate-tunability of the long-range magnetic order in a p-type V-doped WSe2 monolayer using ab initio calculations. We found that at a low V-doping concentration limit, the long-range ferromagnetic order is enhanced by increasing the hole density. In contrast, the short-range antiferromagnetic order is manifested at a high electron density by full compensation of the p-type V doping concentration. The hole-mediated long-range magnetic exchange is ~70 meV, thus strongly suggesting the ferromagnetism in V-doped WSe2 at room temperature. Our findings on strong coupling between charge and spin order in V-doped WSe2 provide plenty of room for multifunctional gate-tunable spintronics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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