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Ultrafast electron dynamics in a topological surface state observed in two-dimensional momentum space
J. Reimann, K. Sumida, M. Kakoki +5
We study ultrafast population dynamics in the topological surface state of SbTe in two-dimensional momentum space with time- and angle-resolved two-photon photoemission. Li…
Unoccupied topological surface state in BiTeSe
Munisa Nurmamat, E. E. Krasovskii, K. Kuroda +10
Bias voltage dependent scattering of the topological surface state is studied by scanning tunneling microscopy/spectroscopy for a clean surface of the topological insulator BiT…
Topological Surface States with Persistent High Spin Polarization across Dirac Point in BiTeSe and BiSeTe
K. Miyamoto, A. Kimura, T. Okuda +9
Helical spin textures with the marked spin polarizations of topological surface states have been firstly unveiled by the state-of-the-art spin- and angle-resolved photoemission spe…
Spin-polarized Dirac-cone-like surface state with character at W(110)
K. Miyamoto, A. Kimura, K. Kuroda +5
The surface of W(110) exhibits a Dirac-cone-like surface state with character within a spin-orbit-induced symmetry gap. As a function of wave vector parallel to the surface, it…