Efficient spin resolved spectroscopy observation machine at Hiroshima Synchrotron Radiation Center

Okuda Taichi

Miyamoto Koji

Miyahara Hirokazu

Kuroda Kenta

Kimura Akio

Namatame Hirofumi

Taniguchi Masaki

Review of scientific instruments

Highly efficient spin- and angle-resolved photoelectron spectrometer named ESPRESSO (Efficient SPin REsolved SpectroScopy Observation) machine has been developed at the beamline BL-9B in Hiroshima Synchrotron Radiation Center. Combination of high-resolution hemispherical electron analyzer and the high-efficient spin detector based on very low energy electron diffraction by the ferromagnetic target makes the high-energy resolution and angular resolution compatible with spin- and angle-resolved photoemission (SARPES) measurement. 7.5 meV in energy and ±0.18° in angular resolution have been achieved with spin resolution. The ESPRESSO machine, combination of quick energy-band dispersion measurement and Fermi surface mapping by two-dimensional electron detector for the spin integrated ARPES and the high-efficient spin analysis by the efficient spin detector realizes the comprehensive investigation of spin electronic structure of materials.

angular measurement

electron diffraction

Fermi surface

magnetoelectronics

photoelectron spectra

synchrotron radiation

物理学 [ 420 ]

英語

American Institute of Physics

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[ISSN] 0034-6748

[DOI] 10.1063/1.3648102

[NCID] AA00817730

[DOI] http://dx.doi.org/10.1063/1.3648102