Ultrafast Phase Transition Dynamics in GeSb Alloys, at CLEO/QELS 2001 (Baltimore, MD), Tuesday, May 8, 2001:
    We measure the femtosecond time resolved dielectric function of a-GeSb after excitation with an ultrashort laser pulse. The results reveal an ultrafast transition to a new non-thermodynamic phase that is not c-GeSb, as suggested elsewhere.