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11,11,12,12‐Tetracyanonaphtho‐2,6‐quinodimethane in Contact with Ferromagnetic Electrodes for Organic Spintronics
Advanced Electronic Materials ( IF 6.2 ) Pub Date : 2018-05-31 , DOI: 10.1002/aelm.201800077
Shengwei Shi 1, 2 , Zhengyi Sun 3 , Xianjie Liu 2 , Amilcar Bedoya-Pinto 4 , Patrizio Graziosi 5 , Huangzhong Yu 6 , Wenting Li 1 , Gang Liu 1 , Luis Hueso 4 , Valentin A. Dediu 5 , Mats Fahlman 2
Affiliation  

Spinterface engineering has shown quite important roles in organic spintronics as it can improve spin injection or extraction. In this study, 11,11,12,12‐tetracyanonaptho‐2,6‐quinodimethane (TNAP) is introduced as an interfacial layer for a prototype interface of Fe/TNAP. An element‐specific investigation of the electronic and magnetic structures of Fe/TNAP system by use of near edge X‐Ray absorption fine structure (NEXAFS) and X‐ray magnetic circular dichroism (XMCD) is reported. Strong hybridization between TNAP and Fe and induced magnetization of N atoms in TNAP molecule are observed. XMCD sum rule analysis demonstrates that the adsorption of TNAP reduces the spin moment of Fe by 12%. In addition, induced magnetization in N K‐edge of TNAP is also found with other commonly used ferromagnets in organic spintronics, such as La0.7Sr0.3MnO3 and permalloy, which makes TNAP a very promising molecule for spinterface engineering in organic spintronics.

中文翻译:

与用于有机自旋电子学的铁磁电极接触的11,11,12,12-四氰基萘-2-6,喹啉二甲烷

Spinterface工程在有机自旋电子学中已显示出非常重要的作用,因为它可以改善自旋注入或萃取。在这项研究中,引入11,11,12,12-四氰基萘-2,6-喹二甲烷(TNAP)作为Fe / TNAP原型界面的界面层。报告了通过使用近边缘X射线吸收精细结构(NEXAFS)和X射线磁圆二向色性(XMCD)对Fe / TNAP系统的电子和磁性结构进行的元素特定研究。观察到TNAP和Fe之间的强杂交以及TNAP分子中N原子的磁化。XMCD和规则分析表明,TNAP的吸附使Fe的自旋矩降低了12%。此外,还发现有机自旋电子学中的其他常用铁磁体(例如La)也能在TNAP的NK边缘中感应出磁化强度。0.7 Sr 0.3 MnO 3和坡莫合金,这使得TNAP成为有机自旋电子学中界面工程非常有前景的分子。
更新日期:2018-05-31
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