当前位置: X-MOL 学术Physica E Low Dimens. Syst. Nanostruct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Impossibility of increasing Néel temperature in zigzag graphene nanoribbon by electric field and carrier doping
Physica E: Low-dimensional Systems and Nanostructures ( IF 3.3 ) Pub Date : 2021-01-23 , DOI: 10.1016/j.physe.2021.114641
Teguh Budi Prayitno

We investigated the dependence of Néel temperature as a critical temperature on the electric field and hole-electron doping in the antiferromagnetically ordered zigzag graphene nanoribbon. The temperature was calculated by averaging the magnon energy in the Brillouin zone within the mean-field approximation. We employed the generalized Bloch theorem instead of the supercell approach to reduce the computational cost significantly to obtain the magnon spectrum. We showed that the Néel temperature reduces when increasing both the electric field and the hole-electron doping, thus these treatments will never enhance the Néel temperature.



中文翻译:

电场和载流子掺杂不可能提高曲折形石墨烯纳米带中的Néel温度

我们研究了Néel温度(作为临界温度)对反铁磁有序之字形石墨烯纳米带中电场和空穴电子掺杂的依赖性。通过在平均场近似内对布里渊区的马农能量求平均来计算温度。我们采用广义的Bloch定理代替超级单元方法来显着降低获得马农波谱的计算成本。我们表明,当增加电场和空穴电子掺杂时,奈尔温度会降低,因此这些处理永远不会提高奈尔温度。

更新日期:2021-02-01
down
wechat
bug