Magnetic impurities in graphene

被引：56

作者：

Hu, F. M. ^{[1
,2
,3
]}

Ma, Tianxing ^{[4
]}

Lin, Hai-Qing ^{[1
,2
,5
]}

Gubernatis, J. E. ^{[6
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Inst Theoret Phys, Hong Kong, Hong Kong, Peoples R China

[3] Aalto Univ, Sch Sci & Technol, COMP Dept Appl Phys, FI-00076 Espoo, Finland

[4] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China

[5] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China

[6] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 07期

关键词：

GAPLESS FERMI SYSTEMS; RENORMALIZATION-GROUP; ANDERSON; METALS; PHASE;

D O I：

10.1103/PhysRevB.84.075414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We used a quantum Monte Carlo method to study the magnetic impurity adatoms on graphene. We found that by tuning the chemical potential we could switch the values of the impurity local magnet moment between relatively large and small values. Our computations of the impurity spectral density found its behavior to differ significantly from that of an impurity in a normal metal and our computations of the charge-charge and spin-spin correlations between the impurity and the conduction-band electrons found them to be strongly suppressed. In general, our results are consistent with those from poor man's scaling and numerical renormalization group methods.

引用

页数：6

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