Orbital and spin magnetic moments of ferrocene encapsulated in metallicity sorted single-walled carbon nanotubes

摘要

The nature of the electronic and local magnetic properties of ferrocene (FeCp_2) filled single-walled carbon nanotubes (SWCNT) has been investigated by X-ray absorption spectroscopy (XAS) andmagnetic circular dichroism(XMCD).Metallic, semiconducting, and unsorted ferrocene-filled tubes have been studied in different conditions of temperature and magnetic field. XMCDsignal becomes evident with the application of amagnetic 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