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Addressing individual paramagnetic molecules through ESN-STM |
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| Authors: | M Mannini P Messina L Gorini A Caneschi P Sigalotti D Gatteschi |
| Institution: | a Department of Chemistry and INSTM Research Unit, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy b Sincrotrone, Science Park Area, Campus Basovizza, 34012 Trieste, Italy c Department of Physics, Ben Gurion University of the Negev, P.O. Box 653, Beer Sheva 84105, Israel d APEResearch, Science Park Area, Campus Basovizza, 34012 Trieste, Italy |
| Abstract: | We present our recent efforts in the build-up of a room temperature electron spin noise scanning tunnelling microscope (ESN-STM) designed for ultra-thin molecular films investigation. We describe here the first results obtained with this system on a commercial paramagnetic molecule deposited on Au(1 1 1) surfaces, namely 1,1-diphenyl-2-picrylhydrazyl (DPPH). Further we briefly present our ongoing work on the preparation and characterization of a new class of samples for this instrumentation. These are based on the self-assembling on surfaces of functionalized organic radicals. We suggest here a complete procedure to assess a good candidate molecule for ESN-STM experiments through X-band CW-ESR, standard STM investigations and ToF-SIMS analysis. |
| Keywords: | ESN STM ESR Organic radicals Ultrathin films |
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