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Updated: Jul 16, 2025
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Optical and spin-selective time-of-flight measurement of light-induced desorption of Rb from Fe[Formula: see
Kanta Asakawa1, Naoki Tanabe1, Taizo Kawauchi2
1Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 Japan.
Abstract:
Light-induced desorption of Rb atoms from a ferrimagnetic Fe[Formula: see text]O[Formula: see text](001) surface was studied using a spin-selective optical method, which provides information on the spin polarization, velocity distribution, and amount of the desorbed atoms. The results showed that the intensity of the desorption of Rb from Fe[Formula: see text]O[Formula: see text](001) induced by ultraviolet (UV) light irradiation was smaller than the detection limit at coverages lower than the threshold coverage at which the desorption rate began to increase. Moreover, the average magnetic quantum number of the desorbed atoms was smaller than that of electrons at the Fermi level of the Fe[Formula: see text]O[Formula: see text](001) surface. These indicate that the light-induced desorption of Rb from an Fe[Formula: see text]O[Formula: see text](001) surface occurs only in the high-coverage region in which the desorbing atoms are not in contact with the Fe[Formula: see text]O[Formula: see text] surface, and that the desorption does not involve spin transfer.
