367 citations · 3.2k across the 59 of their papers we have counts for
6 papers · 2 filters
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…
Discovery of a new type of topological Weyl fermion semimetal state in MoWTe
Ilya Belopolski, Daniel S. Sanchez, Yukiaki Ishida +23
The recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in nature and dramatically broadens the classification of topological phases. However, in Ta…
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…
Coherent control over three-dimensional spin polarization for the spin-orbit coupled surface state of BiSe
Kenta Kuroda, Koichiro Yaji, M. Nakayama +7
Interference of spin-up and spin-down eigenstates depicts spin rotation of electrons, which is a fundamental concept of quantum mechanics and accepts technological challenges for t…
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…
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…