Looking Inside the Perchlorinated Trityl Radical/Metal Spinterface through Spectroscopy.
We report on a spectroscopic multitechnique approach to study the metal/radical spinterface formed by a perchlorinated trityl radical derivative and either gold or silver. The spectroscopic fingerprint of their paramagnetic properties could be determined by comparison with their diamagnetic precursor and by DFT calculations. Thanks to the presented approach, we could gain unprecedented insight into the radical-metal interaction and how this latter perturbs the spin polarization and consequently the magnetoelectronic properties of the radical adlayer. Knowledge of the factors influencing the spinterface is an essential tool toward the tailoring of the properties of spin-based electronic devices.
†Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC/CIBER-BBN), Cerdanyola del Valles, 08193 Barcelona, Spain.
Veronica
V
Mugnaini
‡CNR-NANO Istituto Nanoscienze, Centro S3, I-41125 Modena, Italy.
Arrigo
A
Calzolari
§Helmholtz Zentrum Berlin für Materialien und Energie GmbH, D-12489 Berlin, Germany.
Ruslan
R
Ovsyannikov
§Helmholtz Zentrum Berlin für Materialien und Energie GmbH, D-12489 Berlin, Germany.
Antje
A
Vollmer
†Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC/CIBER-BBN), Cerdanyola del Valles, 08193 Barcelona, Spain.
Mathieu
M
Gonidec
†Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC/CIBER-BBN), Cerdanyola del Valles, 08193 Barcelona, Spain.
Isaac
I
Alcon
†Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC/CIBER-BBN), Cerdanyola del Valles, 08193 Barcelona, Spain.
Jaume
J
Veciana
∥CNR IOM TASC National Lab, I-34149 Trieste, Italy.
Maddalena
M
Pedio
D004578:Electron Spin Resonance Spectroscopy; D008670:Metals / Q000737:chemistry*; D010472:Perchlorates / Q000737:chemistry*; D014320:Triphenylmethyl Compounds / Q000737:chemistry*
D008670:Metals; D010472:Perchlorates; D014320:Triphenylmethyl Compounds; C576518:Perchloric Acid
electronic properties; hybridization; interface chemistry; inverse photoemission; near-edge X-ray absorption fine structure spectroscopy; perchlorinated trityl radicals; photoemission; spin delocalization; spin polarization; spintronics