11,11,12,12-Tetracyanonaphtho-2,6-quinodimethane in Contact with Ferromagnetic Electrodes for Organic SpintronicsShow others and affiliations
2018 (English)In: Advanced Electronic Materials, E-ISSN 2199-160X, Vol. 4, no 7, article id 1800077Article in journal (Refereed) Published
Abstract [en]
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.
Place, publisher, year, edition, pages
WILEY , 2018. Vol. 4, no 7, article id 1800077
Keywords [en]
near edge X-ray absorption fine structure; organic spintronics; spin polarization; sum rules; X-ray magnetic circular dichroism
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-149866DOI: 10.1002/aelm.201800077ISI: 000437828700008OAI: oai:DiVA.org:liu-149866DiVA, id: diva2:1236429
Note
Funding Agencies|European Union Seventh Framework Programme (FP7) [263104]; National Natural Science Foundation of China [61474046, 51703173, 11504168]; Natural Science Foundation of Guangdong Province [2017A030313]
2018-08-022018-08-022021-06-11