44 citations · 362 across the 23 of their papers we have counts for
10 papers · 1 filter
All-optical magnetization reversal via x-ray magnetic circular dichroism
Kihiro T. Yamada, Akira Izumi, Tetsuya Ikebuchi +15
Light polarization is one of the most fundamental features, equivalent to energy and coherence. Magnetism changes light polarization, and vice versa. The irradiation of intense cir…
A simple method to find temporal overlap between THz and X-ray pulses using X-ray-induced carrier dynamics in semiconductors
Yuya Kubota, Takeshi Suzuki, Shigeki Owada +5
X-ray-induced carrier dynamics in silicon and gallium arsenide were investigated through intensity variations of transmitted terahertz (THz) pulses in the pico to microsecond time…
Non-equilibrium pathways to emergent polar supertextures
Vladimir A. Stoica, Tiannan Yang, Sujit Das +31
Ultrafast stimuli can stabilize metastable states of matter inaccessible by equilibrium means. Establishing the spatiotemporal link between ultrafast excitation and metastability i…
Ultrafast x-ray scattering reveals composite amplitude collective mode in the Weyl charge density wave material (TaSe)I
Quynh L. Nguyen, Ryan A. Duncan, Gal Orenstein +27
We report ultrafast x-ray scattering experiments of the quasi-1D charge density wave (CDW) material (TaSe)I following photoexcitation with femtosecond infrared laser pulses…
Suppression of atomic displacive excitation in photo-induced A phonon mode of bismuth unveiled by low-temperature time-resolved x-ray diffraction
Y. Kubota, Yoshikazu Tanaka, T. Togashi +7
An ultrafast atomic motion of a photo-induced coherent phonon of bismuth at low temperatures was directly observed with time-resolved x-ray diffraction. A cryostat with a window th…
Polarization-Resolved Extreme Ultraviolet Second Harmonic Generation from LiNbO
Can B. Uzundal, Sasawat Jamnuch, Emma Berger +17
Second harmonic generation (SHG) spectroscopy ubiquitously enables the investigation of surface chemistry, interfacial chemistry as well as symmetry properties in solids. Polarizat…
Direct observation of symmetry-breaking in a 'ferroelectric' polar metal
Emma Berger, Sasawat Jamnuch, Can Uzundal +17
Ferroelectric materials contain a switchable spontaneous polarization that persists even in the absence of an external electric field. The coexistence of ferroelectricity and metal…
Single shot x-ray diffractometry in SACLA with pulsed magnetic fields up to 16 T
Akihiko Ikeda, Yasuhiro H. Matsuda, Xuguang Zhou +4
Single shot x-ray diffraction (XRD) experiments have been performed with a x-ray free electron laser (XFEL) under pulsed high magnetic fields up to 16 T generated with a nondestruc…
Element-selective tracking ultrafast demagnetization process in Co/Pt multilayer thin films by the resonant magneto-optical Kerr effect
Kohei Yamamoto, Souliman El Moussaoui, Yasuyuki Hirata +8
We examined the photo-induced dynamics of ferromagnetic Co/Pt thin films demonstrating perpendicular magnetic anisotropy with element specificity using resonant polar magneto-optic…
Ultrafast demagnetization of Pt magnetic moment in L1-FePt probed by hard x-ray free electron laser
Kohei Yamamoto, Yuya Kubota, Motohiro Suzuki +15
We demonstrate ultrafast magnetization dynamics in a 5d transition metal using circularly-polarized x-ray free electron laser in the hard x-ray region. A decay time of light-induce…