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arXiv · 1805.07906

11,11,12,12-tetracyanonaphtho-2,6-quinodimethane in Contact with Ferromagnetic Electrodes for Organic Spintronics

Shengwei Shi·Zhengyi Sun·Xianjie Liu·Amilcar Bedoya-Pinto·Patrizio Graziosi·Huangzhong Yu·Wenting Li·Gang Liu·Luis Hueso·Valentin A. Dediu·Mats Fahlman
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Abstract

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. We report 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). 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 has also been 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.

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Shengwei Shi, Zhengyi Sun, Xianjie Liu, Amilcar Bedoya-Pinto, Patrizio Graziosi, Huangzhong Yu, Wenting Li, Gang Liu, Luis Hueso, Valentin A. Dediu, Mats Fahlman. 2018-05-21. 11,11,12,12-tetracyanonaphtho-2,6-quinodimethane in Contact with Ferromagnetic Electrodes for Organic Spintronics. https://arxiv.org/abs/1805.07906

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