Spin dephasing and pumping in graphene due to random spin-orbit interaction

被引：59

作者：

Dugaev, V. K. ^{[1
,2
,3
]}

Ya Sherman, E. ^{[4
,5
]}

Barnas, J. ^{[6
,7
]}

机构：

[1] Rzeszow Univ Technol, Dept Phys, PL-35959 Rzeszow, Poland

[2] Univ Tecn Lisboa, Dept Phys, P-1049001 Lisbon, Portugal

[3] Univ Tecn Lisboa, CFIF, Inst Super Tecn, P-1049001 Lisbon, Portugal

[4] Univ Pais Vasco UPV EHU, Dept Phys Chem, E-48080 Bilbao, Spain

[5] Basque Fdn Sci, IKERBASQUE, E-48011 Bilbao, Spain

[6] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

[7] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 08期

关键词：

RESONANCE;

D O I：

10.1103/PhysRevB.83.085306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider spin effects related to the random spin-orbit interaction in graphene. Such a random interaction can result from the presence of ripples and/or other inhomogeneities at the graphene surface. We show that the random spin-orbit interaction generally reduces the spin dephasing (relaxation) time, even if the interaction vanishes on average. Moreover, the random spin-orbit coupling also allows for spinmanipulation with an external electric field. Because of the spin-flip interband as well as intraband optical transitions, the spin density can be effectively generated by a periodic electric field in a relatively broad range of frequencies.

引用

页数：8

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