Dresden 2017 – scientific programme

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MA: Fachverband Magnetismus

MA 64: Poster 1

MA 64.17: Poster

Friday, March 24, 2017, 09:30–13:00, P2-EG

PLY-Cu for organic MTJs — •Christian Denker¹, Pavan K. Vardhanapu², Bikash Das Mohapatra⁴, Ulrike Martens¹, Heba Mohammad¹, Mykola Medvidov³, Christiane Helm¹, Swadhin Mandal², and Markus Münzenberg¹ — ¹Institut für Physik, Universität Greifswald, Germany — ²IISER, Kolkata, India — ³ZIK HIKE, Universität Greifswald, Germany. — ⁴NISER, Bhubaneshwar, India

Phenalenyl (PLY) based molecules are promising candidates for spintronics application. Attempts to use open shell PLY molecules have been unsuccessful due to their instability. Mandal and coworkers took a new route for PLY-based molecules with a closed shell ground state. For example, zinc methyl phenaleny (ZMP) shows a magneto-resistance of 20% even near room temperature [Nature 493 509 (2013)].

Motivated by these results, we are investigating a new closed shell molecule, PLY with Cu complex, for its spintronics suitablity. Thin film are deposited by thermal evaporation maintaining its chemical properties as shown by Fourier transform infrared spectroscopy (FTIR). Ferromagnet/PLY-Cu/ferromagnet heterostructure devices are fabricated by deposition through an in-situ mask under different angles. These devices are characterized by atomic-force microscopy (AFM), scanning electron microscopy (SEM) and magneto-resistance measurements.