Welcome, to what we do:

Juana Vivó Acrivos, Professor of Chemistry

Our logo was designed by my student Vu Nguyen in 1996. The SCF electron density map in the CuO₂ layer of superconducting cuprates shown above is important to understand experimental results as described in: Int. J. Quantum Chemistry, 46, 55 (1993). The electron density above is shown increasing from .005 electrons/bohr^³ in the (CuO₂)₅O₆^^-22 lamella in the crystal field of the two dimensional superconductor YBa₂Cu₃O₇ made up of 346 atoms and point charges. It may be obvious to all thinking chemists that in the CuO₂^^-2 conduction layer of superconducting cuprates, the highest filled orbitals are mostly oxygen type. Click on the above reference to see how the electron density changes as the energy levels fill up. Note that the highest filled states are mostly overlapping diagonally adjacent O:2p_x, 2p_y states. The conductivity as well as the orientation dependence of photo-emission measurements can be explained by the direction of delocalized MO orbitals in the highest filled states.

To see the update of X-Ray Absorption Spectroscopy (XAS) at the Stanford Synchrotron Radiation Laboratory (SSRL) and SJSU please look up published work on "Dynamic phenomena in layer superconducting cuprate and organic metals", Superlattices and Microstructures,18, 197 (1995).

To see the update of Electron Spin Resonance (ESR) at the SJSU educational/research facility please look up published work on " Dynamic Phenomena In the Organic Metal (BEDT-TTF)₃Ta₂F₁₁", Mol. Cryst. Liq. Cryst. 284, 411 (1996).

Information on special lectures on Advanced Analytical Chemistry on modern topics (not found in textbooks or regular curricula) can be accessed under Teaching Philosophy CHEM 159XAS and CHEM 159ESR.

CCC Chair's Report Meeting Hayward State University, July 11 and 12 1997.

CHEM291D Fall 1998 Astrochemistry Seminar Series by NASA and SJSU Scientists.

Please register and send questions and suggestions through the student help desk to: acrivos@chemibr1.sjsu.edu