title: Dynamical aspects of the photoinduced phase transition in spin-crossover complexes
abstract: We report a dynamical study on the photoinduced cooperative changes of the spin configurations in single crystals of the organometal spin-crossover complex. In the photoswitching process between low- and high-spin states, nonlinear characteristics such as thresholdlike behavior, incubation period, and phase separation have been observed. These results demonstrate that the cooperative intersystem crossing mediated by spin-lattice interaction plays a key role in the driving process of a new class of nonequilibrium phenomena so called photoinduced phase transition.
authors.affiliation: Department of Condensed Matter Physics, Tokyo Institute of Technology, Oh-okayama, Meguro-ku, Tokyo 152-8551, Japan and Kanagawa Academy of Science and Technology (KAST), Sakado, Takatsu-ku, Kawasaki 213-0012, Japan.
authors.initials: Y
authors.lastname: Ogawa
authors.initials: S
authors.lastname: Koshihara
authors.initials: K
authors.lastname: Koshino
authors.initials: T
authors.lastname: Ogawa
authors.initials: C
authors.lastname: Urano
authors.initials: H
authors.lastname: Takagi