Addressing individual paramagnetic molecules through ESN-STM

Mannini, Matteo; Messina, P.; Sorace, Lorenzo; Gorini, Lapo; Fabrizioli, M.; Caneschi, Andrea; Manassen, Y.; Sigalotti, P.; Pittana, P.; Gatteschi, Dante

doi:10.1016/j.ica.2007.02.005

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(111) 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. (c) 2007 Elsevier B.V. All rights reserved.

Addressing individual paramagnetic molecules through ESN-STM / M. Mannini; P. Messina; L. Sorace; L. Gorini; M. Fabrizioli; A. Caneschi; Y. Manassen; P. Sigalotti; P. Pittana; D. Gatteschi. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - STAMPA. - 360:(2007), pp. 3837-3842. [10.1016/j.ica.2007.02.005]