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Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 51: Magnetism Poster B

MA 51.67: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster C

New PLY Molecules for Spintronics — •Neha Jha1, Christian Denker1, Anand Paryar2, Pavan K. Vardhanapu2, Heba Mohamad1, Christiane Helm1, Swadhin Mandal2, and Markus Münzenberg11Institut für Physik, Universität Greifswald, Germany — 2Department of Chemical Sciences, IISER, Kolkata, India

Phenalenyl (PLY) based molecules, which can be regarded as Graphene fragments are promising candidates for molecular spintronic applications due to their flexibility and low spin-orbit interaction. We investigate organic magnetic tunnel junctions (OMTJ) using a closed shell PLY molecule barrier with different metal complexes (Cu, Zinc). The voltage dependent current shows non-linear behavior and yields a magnetoresistance effect (MR). TR-MOKE measurements give an insight into the Co/Molecule interface properties. They show an enhancement of exchange interaction and a tunability of the Gilbert damping due to π-d hybridization at the interface compared to bare Co, providing evidence for spin pumping. This is important effect for the development of STT-MRAM devices and molecular-scale quantum spin memory.

[1] Sanvito, S. Molecular spintronics: "The rise of spinterface science", Nature Phys. 6, 562-564 (2010)

[2] K.V. Raman, "Interface-engineered templates for molecular spin memory devices". Nature, 509-513 (2013)

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