128 citations · 328 across the 5 of their papers we have counts for
5 papers
Buildup and dephasing of Floquet-Bloch bands on subcycle time scales
S. Ito, M. Schüler, M. Meierhofer +10
Strong light fields have created spectacular opportunities to tailor novel functionalities of solids. Floquet-Bloch states can form under periodic driving of electrons and enable e…
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…
Ultrafast Energy- and Momentum-resolved Surface Dirac Photocurrents in the Topological Insulator SbTe
Kenta Kuroda, J. Reimann, K. A. Kokh +4
We present energy-momentum mapping of surface Dirac photocurrent in the topological insulator SbTe by means of time- and angle-resolved two-photon photoemission spectroscop…
Intervalley scattering in MoS imaged by two-photon photoemission with a high-harmonic probe
Robert Wallauer, Johannes Reimann, Nico Armbrust +2
We report on the direct mapping of electron transfer in the momentum space of bulk MoS by means of time- and angle-resolved two-photon photoemission with a high-harmonic probe.…
Generation of Transient Photocurrents in the Topological Surface State of SbTe by Direct Optical Excitation with Mid-Infrared Pulses
K. Kuroda, J. Reimann, J. Güdde +1
We combine tunable mid-infrared (MIR) pump pulses with time- and angle-resolved two-photon photoemission to study ultrafast photoexcitation of the topological surface state (TSS) o…