Briones-Leon, A.; Liu, X.; Ayala, P.; Kataura, H.; Yanagi, K.; Weschke, E.; Pichler, T.; Shiozawa, H.: Orbital and spin magnetic moments of ferrocene encapsulated in metallicity sorted single-walled carbon nanotubes. Physica Status Solidi B 249 (2012), p. 2424-2427
10.1002/pssb.201200165
Abstract:
The nature of the electronic and local magnetic properties of ferrocene (FeCp2) filled single-walled carbon nanotubes (SWCNT) has been investigated by X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD). Metallic, semiconducting, and unsorted ferrocene-filled tubes have been studied in different conditions of temperature and magnetic field. XMCD signal becomes evident with the application of a magnetic field at low temperature. We find that the molecular states of ferrocene interact with SWCNT of different metallicities. A paramagnetic behavior of encapsulated ferrocene is observed from the magnetic field dependent XMCD measurements which is consistent with theoretical predictions.