High-resolution three-dimensional spin- and angle-resolved photoelectron spectrometer using vacuum ultraviolet laser light

Journal Article · Sun May 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4948738· OSTI ID:22598019

Yaji, Koichiro; Harasawa, Ayumi; Kuroda, Kenta; Toyohisa, Sogen; Nakayama, Mitsuhiro; Ishida, Yukiaki; Fukushima, Akiko; Komori, Fumio; Shin, Shik ^[1]; Watanabe, Shuntaro ^[2]; Chen, Chuangtian ^[3]

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1. Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)
2. Research Institute for Science and Technology, Tokyo University of Science, Chiba 278-8510 (Japan)
3. Beijing Center for Crystal Research and Development, Chinese Academy of Science, Zhongguancun, Beijing 100190 (China)

We describe a spin- and angle-resolved photoelectron spectroscopy (SARPES) apparatus with a vacuum-ultraviolet (VUV) laser (hν = 6.994 eV) developed at the Laser and Synchrotron Research Center at the Institute for Solid State Physics, The University of Tokyo. The spectrometer consists of a hemispherical photoelectron analyzer equipped with an electron deflector function and twin very-low-energy-electron-diffraction-type spin detectors, which allows us to analyze the spin vector of a photoelectron three-dimensionally with both high energy and angular resolutions. The combination of the high-performance spectrometer and the high-photon-flux VUV laser can achieve an energy resolution of 1.7 meV for SARPES. We demonstrate that the present laser-SARPES machine realizes a quick SARPES on the spin-split band structure of a Bi(111) film even with 7 meV energy and 0.7{sup ∘} angular resolutions along the entrance-slit direction. This laser-SARPES machine is applicable to the investigation of spin-dependent electronic states on an energy scale of a few meV.

• OSTI ID: 22598019
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON DIFFRACTION
ELECTRONS
ENERGY RESOLUTION
FAR ULTRAVIOLET RADIATION
FILMS
LASERS
MEV RANGE 01-10
PHOTOELECTRON SPECTROSCOPY
PHOTONS
SOLID STATE PHYSICS
SPECTROMETERS
SPIN
SYNCHROTRONS
THREE-DIMENSIONAL CALCULATIONS
VECTORS