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Dr Yu Zhang
Room 230
Christopher Ingold Building
20 Gordon Street
London
United Kindom
WC1H 0AJ
Appointment
  • Research Associate
  • Dept of Chemistry
  • Faculty of Maths & Physical Sciences
Biography

Since 2012 PostDoc, Department of Chemistry, University College London, Lodon, United Kingdom.
2008 - 2012 PostDoc, Max Planck Institute of Microstructure Physics, Halle, Germany.
2004 - 2008 Ph.D. Physics, Max Planck Institute of Microstructure Physics, Halle, Germany.
2000 - 2003 M.A. Environmental Science and Engineering, Tsinghua University, Beijing, China.
1996 - 2000 B.S. Environmental Science and Engineering, Tsinghua University, Beijing, China.

Research Summary

I study the electronic band structure of an oxidized surface by using photoelectron spectroscopy. The photon sources include X-ray (1253 eV), ultra violet light (21.2 eV, 40.8 eV) and ultrafast Ti-sapphire pulsed laser (0.8 - 6 eV), which enable us to perform in-situ XPS, UPS and two photon photoemission spectroscopy. These techiques allow to investigate the electronic band structure  from high to low binding energies, such as the inner electronic shells, the valence/conduction bands and even those states above the Fermi levels. This gives a full profile about the electronic band structure of a material.

Moreover, the changes of these states induced by the physical and chemical modifications, such as cooling, heating, adsorption of molecular can be also systematically studied. The study of the correlation between chemical activity and electronic property can give us more insights about the chemistry of a surface.

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