Atomic Manipulation and Spectroscopy Group

Research Topics

For an overview of our most recent research activities please follow this
  • link
  • Magnetic impurities
  • STM image of an individual Cobalt atom on a single crystal Cu(100) surface X-ray absorption spectra and dichroism of Fe, Co, and Ni impurities on K films compared to the bulk metals (insets).

  • Metal nanoparticles
  • Magnetic anisotropy energy (K) and orbital magnetic moment (L) of Co nanoparticles self-assembled on Pt(111). Exchange-biased permalloy dots imaged by photoemission electron microscopy.

  • Molecular-metal interfaces
  • Self-assembly of metal-phthalocyanines imaged by STM.

  • X-ray detection of magnetic resonance
  • Element resolved ferromagnetic resonance spectra of Gd-doped yittrium-iron-garnet.

  • ICN-ALBA Collaboration
  • Combined STM and XMCD facility at ICN-ALBA

    Taking advantage of the proximity of the new spanish synchrotron light source, an important part of our activity is directed towards combining the expertise and facilities of our institute and ALBA. Two of the seven beamlines in phase I of ALBA will be devoted to research in magnetism. PEEM (photoemission microscopy), XMCD and XRMS experimental facilities will be installed in variable polarization beamlines in the soft x-ray range. The XMCD endstation will be equipped with variable magnetic fields up to 7 T , a liquid He cryostat, and UHV environment. Our contribution to the latter consists in the design, set up and maintenance of a dedicated UHV chamber for sample growth and characterization, a prerequisite for the success of many experiments that require fine-tuning of the sample composition and morphology. This chamber has been recently assembled and includes e-beam evaporators, Knudsen cells, a LEED Auger spectrometer, and a variable-temperature STM. It will be available to national and foreign ALBA users for performing XMCD experiments that require in-site sample growth and atomic-scale characterization, pending scientific and technical approval of beamtime proposals.

    For more information please contact pietro.gambardella.icn \{at} uab.es