ESR study of spin relaxation in graphene
ESR study of spin relaxation in graphene
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DOI：
10.1016/j.cplett.2012.12.018
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发表时间：
2013-02-05
影响因子：
2.8
通讯作者：
Lijewski, Stefan
中科院分区：
文献类型：
--
作者：
Augustyniak-Jablokow, Maria A.;Tadyszak, Krzysztof;Lijewski, Stefan
我们报告的脉冲ESR研究的电子自旋弛豫过程中的石墨烯。弛豫速率的线性温度依赖性对应于T-1近似T-2类似于0.1-1 μ s，类似的值的g-因子的可能的顺磁中心，和洛伦兹线形的信号表明瓶颈效应的自旋弛豫的强耦合均匀自旋系统的本地化自旋和传导电子。强相互作用的本地化和离域磁矩的理论框架中的数据的解释给出了5-30 ns的顺序的传导电子的自旋弛豫时间，取决于顺磁中心的浓度。(C)2012 Elsevier B. V.保留所有权利。
We report pulse ESR studies of the electron spin relaxation processes in graphene. The linear temperature dependences of relaxation rates corresponding to T-1 approximate to T-2 similar to 0.1-1 mu s, similar values of g-factors of possible paramagnetic centres, and the Lorentzian lineshape of the signal indicate the bottleneck effect in spin relaxation of the strongly coupled homogeneous spin system of localized spins and conduction electrons. Interpretation of the data in the frames of the theory of strongly interacting localized and delocalized magnetic moments gives the spin relaxation time of the conduction electrons of an order of 5-30 ns, depending on the paramagnetic centres concentration. (C) 2012 Elsevier B.V. All rights reserved.