Search Results - "Hofer, U"

Magnetic-impurity-induced modifications to ultrafast carrier dynamics in the ferromagnetic topological insulators Sb2−xVxTe3 by Sumida, K, Kakoki, M, Reimann, J, Nurmamat, M, Goto, S, Takeda, Y, Saitoh, Y, Kokh, K A, Tereshchenko, O E, Güdde, J, Höfer, U, Kimura, A

“…Quantum anomalous Hall effect (QAHE) is a key phenomenon for low power-consumption device applications owing to its dissipationless spin-polarized and…”
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Lomnitz-type viscoelastic behavior of clear spruce wood as identified by creep and relaxation experiments: influence of moisture content and elevated temperatures up to 80 °C by Hofer, U., Pichler, C., Maderebner, R., Lackner, R.

“…The strong dependence of viscoelastic behavior of wood on temperature and moisture content is well documented in the literature. In this paper, viscoelastic…”
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Dynamics of Electronic Transfer Processes at Metal/Insulator Interfaces by Güdde, J, Berthold, W, Höfer, U

“…The coupling of electronic excitations at surfaces to the bulk material is the key to a variety of dynamical processes. Gudde et al discuss the technique of…”
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Tunable non-integer high-harmonic generation in a topological insulator by Schmid, C. P., Weigl, L., Grössing, P., Junk, V., Gorini, C., Schlauderer, S., Ito, S., Meierhofer, M., Hofmann, N., Afanasiev, D., Crewse, J., Kokh, K. A., Tereshchenko, O. E., Güdde, J., Evers, F., Wilhelm, J., Richter, K., Höfer, U., Huber, R.

“…When intense lightwaves accelerate electrons through a solid, the emerging high-order harmonic (HH) radiation offers key insights into the material 1 – 11 …”
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Subcycle observation of lightwave-driven Dirac currents in a topological surface band by Reimann, J., Schlauderer, S., Schmid, C. P., Langer, F., Baierl, S., Kokh, K. A., Tereshchenko, O. E., Kimura, A., Lange, C., Güdde, J., Höfer, U., Huber, R.

“…Harnessing the carrier wave of light as an alternating-current bias may enable electronics at optical clock rates 1 . Lightwave-driven currents have been…”
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Build-up and dephasing of Floquet–Bloch bands on subcycle timescales by Ito, S., Schüler, M., Meierhofer, M., Schlauderer, S., Freudenstein, J., Reimann, J., Afanasiev, D., Kokh, K. A., Tereshchenko, O. E., Güdde, J., Sentef, M. A., Höfer, U., Huber, R.

“…Strong light fields have created opportunities to tailor novel functionalities of solids 1 – 5 . Floquet–Bloch states can form under periodic driving of…”
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Momentum-resolved lifetimes of image-potential States on cu(100) by Berthold, W, Höfer, U, Feulner, P, Chulkov, E V, Silkin, V M, Echenique, P M

“…The dependence of the inelastic lifetime of electrons in the image-potential states of Cu(100) on their momentum parallel to the surface has been studied…”
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Tracing orbital images on ultrafast time scales by Wallauer, R, Raths, M, Stallberg, K, Münster, L, Brandstetter, D, Yang, X, Güdde, J, Puschnig, P, Soubatch, S, Kumpf, C, Bocquet, F C, Tautz, F S, Höfer, U

“…Frontier orbitals determine fundamental molecular properties such as chemical reactivities. Although electron distributions of occupied orbitals can be imaged…”
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Time-Resolved Investigation of Coherently Controlled Electric Currents at a Metal Surface by Güdde, J, Rohleder, M, Meier, T, Koch, S.W, Höfer, U

“…Studies of current dynamics in solids have been hindered by insufficiently brief trigger signals and electronic detection speeds. By combining a coherent…”
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Dissociative adsorption of molecular hydrogen on silicon surfaces by DURR, M, HOFER, U

“…The dissociative adsorption of molecular hydrogen on silicon is considered to be the prototype for an activated chemical reaction at a semiconductor surface…”
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Formation of image-potential states at the graphene/metal interface by Armbrust, N, Güdde, J, Höfer, U

“…The formation of image-potential states at the interface between a graphene layer and a metal surface is studied by means of model calculations. An analytical…”
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Time-resolved two-photon photoemission of unoccupied electronic states of periodically rippled graphene on Ru(0001) by Armbrust, N, Güdde, J, Jakob, P, Höfer, U

“…The unoccupied electronic states of epitaxially grown graphene on Ru(0001) have been explored by time- and angle-resolved two-photon photoemission. We identify…”
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Impact of interface-state formation on the charge-carrier dynamics at organic-metal interfaces by Marks, M, Armbrust, N, Güdde, J, Höfer, U

“…We study the role of electronic interface states on the electron transfer dynamics between layers of the organic semiconductor…”
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Intervalley scattering in MoS2 imaged by two-photon photoemission with a high-harmonic probe by Wallauer, R., Reimann, J., Armbrust, N., Güdde, J., Höfer, U.

“…We report on the direct mapping of electron transfer in the momentum space of bulk MoS2 by means of time- and angle-resolved two-photon photoemission with a…”
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Phonon-assisted sticking of molecular hydrogen on Si(111)-(7 x 7) by Bratu, P, Höfer, U

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Ultrafast electron dynamics in a topological surface state observed in two-dimensional momentum space by Reimann, J., Sumida, K., Kakoki, M., Kokh, K. A., Tereshchenko, O. E., Kimura, A., Güdde, J., Höfer, U.

“…We study ultrafast population dynamics in the topological surface state of Sb 2 Te 3 in two-dimensional momentum space with time- and angle-resolved two-photon…”
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Decay of electronic excitations at metal surfaces by Echenique, P.M., Berndt, R., Chulkov, E.V., Fauster, Th, Goldmann, A., Höfer, U.

“…Recent experimental work has reached an accurate determination of surface-state linewidth by scanning tunneling spectroscopy, photoemission and directly in the…”
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Electron lifetime in a Shockley-type metal-organic interface state by Schwalb, C H, Sachs, S, Marks, M, Schöll, A, Reinert, F, Umbach, E, Höfer, U

“…The lifetimes of electrons at the interface between 3,4,9,10-perylene-tetracarboxylic acid dianhydride (PTCDA) and Ag(111) have been studied by means of time-…”
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Femtosecond time-resolved nonlinear optical spectroscopy of charge transfer at the buried GaP/Si(001) interface by Mette, G., Zimmermann, J. E., Lerch, A., Brixius, K., Güdde, J., Beyer, A., Dürr, M., Volz, K., Stolz, W., Höfer, U.

“…The ultrafast charge-carrier dynamics at the buried heterointerface of gallium phosphide on silicon(001) are investigated by means of time-resolved optical…”
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Spectrally resolved maker fringes in high-order harmonic generation by Heyl, C M, Güdde, J, Höfer, U, L'Huillier, A

“…We investigate macroscopic interference effects in high-order harmonic generation using a Ti:sapphire laser operating at a 100 kHz repetition rate. The…”
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