722 citations · 4.6k across the 64 of their papers we have counts for
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Topological Weyl phase transition in MoWTe
Ilya Belopolski, Daniel S. Sanchez, Yukiaki Ishida +21
Topological phases of matter exhibit phase transitions between distinct topological classes. These phase transitions are exotic in that they do not fall within the traditional Ginz…
Time-resolved photoemission apparatus achieving sub-20-meV energy resolution and high stability
Y. Ishida, T. Togashi, K. Yamamoto +5
The paper describes a time- and angle-resolved photoemission apparatus consisting of a hemispherical analyzer and a pulsed laser source. We demonstrate 1.48-eV pump and 5.90-eV pro…
High repetition pump-and-probe photoemission spectroscopy based on a compact fiber laser system
Y. Ishida, T. Otsu, A. Ozawa +4
The paper describes a time-resolved photoemission (TRPES) apparatus equipped with a Yb-doped fiber laser system delivering 1.2-eV pump and 5.9-eV probe pulses at the repetition rat…
A minimal, "hydrogen atom" version of an inversion-breaking Weyl semimetal
Ilya Belopolski, Peng Yu, Daniel S. Sanchez +15
The recent explosion of research interest in Weyl semimetals has led to many proposed Weyl semimetal candidates and a few experimental observations of a Weyl semimetal in real mate…
Topologically entangled Rashba-split Shockley states on the surface of grey arsenic
Peng Zhang, J. -Z. Ma, Y. Ishida +13
We discover a pair of spin-polarized surface bands on the (111) face of grey arsenic by using angle-resolved photoemission spectroscopy (ARPES). In the occupied side, the pair rese…
Spin Texture in Type-II Weyl Semimetal WTe2
Baojie Feng, Yang-Hao Chan, Ya Feng +15
We determine the band structure and spin texture of WTe2 by spin- and angle-resolved photoemission spectroscopy (SARPES). With the support of first-principles calculations, we reve…
Experimental Discovery of the First Nonsymmorphic Topological Insulator KHgSb
J. -Z. Ma, C. -J. Yi, B. Q. Lv +11
Topological insulators (TIs) host novel states of quantum matter, distinguished from trivial insulators by the presence of nontrivial conducting boundary states connecting the vale…
Measuring Chern numbers above the Fermi level in the Type II Weyl semimetal MoWTe
Ilya Belopolski, Su-Yang Xu, Yukiaki Ishida +30
It has recently been proposed that electronic band structures in crystals give rise to a previously overlooked type of Weyl fermion, which violates Lorentz invariance and, conseque…
High-resolution three-dimensional spin- and angle-resolved photoelectron spectrometer using vacuum ultraviolet laser light
Koichiro Yaji, Ayumi Harasawa, Kenta Kuroda +8
We describe a spin- and angle-resolved photoelectron spectroscopy (SARPES) apparatus with a vacuum-ultraviolet (VUV) laser (= 6.994 eV) developed at the Laser and Synchrotron R…
Low-Temperature and High-Energy-Resolution Laser Photoemission Spectroscopy
Takahiro Shimojima, Kozo Okazaki, Shik Shin
We present a review on the developments in the photoemission spectrometer with a vacuum ultraviolet laser at Institute for Solid State Physics at the University of Tokyo. The advan…