title: Magnetic circular dichroism photoemission electron microscopy using laser and threshold photoemission.
abstract: We demonstrate that laser induced valence band photoemission can be used in the observation of magnetic domain structures with a magnetic circular dichroism photoemission electron microscope (MCD-PEEM). It has been widely considered that valence band photoemission MCD asymmetry is rather small compared to that obtained with x-rays because of its weak spin-orbit coupling. However, we show that the MCD asymmetry is high near the photoemission threshold, permitting us to perform MCD-PEEM experiments. The use of intense and pulsed lasers as excitation sources enables PEEM studies of two-photon photoemission MCD and all optical time resolved MCD.
authors.affiliation: Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakagawa
authors.forename: Kazuya
authors.initials: K
authors.lastname: Watanabe
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Yokoyama