Laurent Guérin

Abstract In materials exhibiting photoinduced phase transitions, and in which both charge transfer and spin transitions occur, there has long been a debate about which process drives the phase transition. Herein, we present experimental evidence supporting an optically charge-transfer-induced spin transition (CTIST) process, as demonstrated through femtosecond optical spectroscopy in two-dimensional cyanido-bridged cobalt-tungstate photomagnets.

Cute headline, but sort of disturbing story about two dentists leaving the staff of El Centro Family Health in part because, they said, the management did not replace or fix an X-ray system that was producing such cloudy images that they couldn't make accurate diagnoses. Dr. Robert Daniels and Dr. Allison Levens told The Taos News that "that administrators' failure to back up the staff' and the murky x-rays that were not addressed were the reasons for their resignations.