Dilute antiferromagnetism in magnetically doped phosphorene

IF 1.2 Q3 PHYSICS, MULTIDISCIPLINARY Papers in Physics Pub Date : 2017-12-31 DOI:10.4279/PIP.090008

A. Allerdt, A. Feiguin

引用次数: 1

Abstract

We study the competition between Kondo physics and indirect exchange on monolayer black phos-phorous using a realistic description of the band structure in combination with the density matrixrenormalization group (DMRG) method. The Hamiltonian is reduced to a one-dimensional problemvia an exact canonical transformation that makes it amenable to DMRG calculations, yielding exactresults that fully incorporate the many-body physics. We find that a perturbative description of theproblem is not appropriate and cannot account for the slow decay of the correlations and the completelack of ferromagnetism. In addition, at some particular distances, the impurities decouple formingtheir own independent Kondo states. This can be predicted from the nodes of the Lindhard function.Our results indicate a possible route toward realizing dilute anti-ferromagnetism in phosphorene. Received: 19 September 2017, Accepted: 12 October 2017; Edited by: K. Hallberg; DOI: http://dx.doi.org/10.4279/PIP.090008 Cite as: A Allerdt, A E Feiguin, Papers in Physics 9, 090008 (2017) This paper, by A Allerdt, A E Feiguin , is licensed under the Creative Commons Attribution License 3.0 .

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磁掺杂磷烯的稀反铁磁性

本文结合密度矩阵重整化群(DMRG)方法，对单层黑色荧光粉的能带结构进行了真实描述，研究了近藤物理与间接交换之间的竞争关系。哈密顿量通过精确的正则变换简化为一维问题，使其适合DMRG计算，从而产生完全包含多体物理的精确结果。我们发现用微扰描述问题是不合适的，不能解释相关的缓慢衰减和铁磁性的完全缺乏。此外，在某些特定的距离上，杂质会解耦形成它们自己独立的近藤态。这可以通过Lindhard函数的节点来预测。我们的研究结果为实现磷烯的稀反铁磁性提供了一条可能的途径。收稿日期:2017年9月19日，收稿日期:2017年10月12日;编辑:K.霍尔伯格;A Allerdt, A E Feiguin, Papers in Physics 9, 090008(2017)本文由A Allerdt, A E Feiguin撰写，使用知识共享署名许可3.0协议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Papers in Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.90

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0.00%

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