Effects of spin doping and spin injection in the luminescence and vibrational spectrum of C60

Timothy Moorsom, May Wheeler, Mohd Taukeer Khan, Fatma Al Ma'Mari, Gavin Burnell, Bryan J. Hickey, Vlado Lazarov, Daniel Gilks, Oscar Cespedes

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Abstract

We have studied the Raman spectrum and photoemission of hybrid magneto-fullerene devices. For C60 layers on cobalt, the spin polarized electron transfer shifts the photoemission energy, reducing the zero phonon contribution. The total luminescence of hybrid devices can be controlled via spin injection from magnetic electrodes, with changes of the order of 10%-20% at room temperature. Spin polarised currents alter as well the Raman spectrum of the molecules, enhancing some modes by a factor 5 while shifting others by several wavenumbers due to a spin-dependent hopping time and/or enhanced intermolecular interactions. These results can be used to measure spin polarisation in molecules or to fabricate magneto-optic and magneto-vibrational devices.

Original languageEnglish
Article number022408
JournalApplied Physics Letters
Volume105
Issue number2
DOIs
Publication statusPublished - 2014

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Moorsom, T., Wheeler, M., Taukeer Khan, M., Al Ma'Mari, F., Burnell, G., Hickey, B. J., Lazarov, V., Gilks, D., & Cespedes, O. (2014). Effects of spin doping and spin injection in the luminescence and vibrational spectrum of C60 . Applied Physics Letters, 105(2), [022408]. https://doi.org/10.1063/1.4885336