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  • Open Access English
    Authors: 
    Beaulieu, Samuel; Schusser, Jakub; Dong, Shuo; Schüler, Michael; Pincelli, Tommaso; Dendzik, Maciej; Maklar, Julian; Neef, Alexander; Ebert, Hubert; Hricovini, Karol; +5 more
    Publisher: Zenodo
    Project: NSERC , EC | OPTOlogic (899794), EC | FLATLAND (682843)

    Angle-resolved photoemission spectroscopy (ARPES) of bulk 2H-WSe2 for different crystal orientations linked to each other by time-reversal symmetry. This dataset supplements a manuscript, and was used to measure a new observable called time-reversal dichroism in photoelectron angular distributions (TRDAD), which quantifies the modulation of the photoemission intensity upon effective time-reversal operation. Experimental results are in quantitative agreement with both tight-binding model and state-of-the-art fully relativistic calculations performed using the one-step model of photoemission, unambiguously demonstrating that TRDAD reveals its orbital pseudospin texture counterpart.

  • Open Access English
    Authors: 
    Beaulieu, Samuel; Dong, Shuo; Tancogne-Dejean, Nicolas; Dendzik, Maciej; Pincelli, Tommaso; Maklar, Julian; Xian, R. Patrick; Sentef, Michael A.; Wolf, Martin; Rubio, Angel; +2 more
    Publisher: Zenodo
    Project: NSERC , EC | FLATLAND (682843), EC | OPTOlogic (899794), EC | QSpec-NewMat (694097)

    This work was funded by the Max Planck Society, the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [grant nos. ERC-2015-CoG-682843, ERC-2015-AdG694097, and H2020-FETOPEN-2018-2019-2020-01 (OPTOLogic, grant agreement no. 899794)], the Grupos Consolidados (IT1249-19); the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the Emmy Noether program (grant nos. RE 3977/1 and MS 2558/2-1); the Cluster of Excellence "Advanced Imaging of Matter" (AIM), the SFB925 "Light-induced dynamics and control of correlated quantum systems"; the Collaborative Research Center/Transregio 227 "Ultrafast SpinDynamics" (projects B07 and A09, project number 328545488); the FOR1700 project (project E5, project number 194370842); and the Priority Program SPP 2244 (project no. 443366970). The Flatiron Institute is a division of the Simons Foundation. S.B. acknowledges financial support from the NSERC-Banting Postdoctoral Fellowships Program. T. P. acknowledges financial support from the Alexander von Humboldt Fellowship program of the Alexander von Humboldt Stiftung. Time and angle-resolved photoemission spectroscopy (ARPES) of bulk Td-MoTe2 for p-polarized pump and probe. This dataset, measured at an absorbed fluence of 0.6 mJ/cm2, demonstrates the occurence of an abrupt change in the Fermi surface topology, also called Lifshitz transition. These results supplement a manuscript unveiling a nonequilibrium dynamical route toward ultrafast modification of the Fermi surface topology, experimentally demonstrated here for the first time. The combination of these measurements with state-of-the-art TDDFT+U simulations demonstrates that this nonequilibrium topological electronic transition finds its microscopic origin in the dynamical modification of the effective electronic correlations.

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The following results are related to Canada. Are you interested to view more results? Visit OpenAIRE - Explore.
2 Research products, page 1 of 1
  • Open Access English
    Authors: 
    Beaulieu, Samuel; Schusser, Jakub; Dong, Shuo; Schüler, Michael; Pincelli, Tommaso; Dendzik, Maciej; Maklar, Julian; Neef, Alexander; Ebert, Hubert; Hricovini, Karol; +5 more
    Publisher: Zenodo
    Project: NSERC , EC | OPTOlogic (899794), EC | FLATLAND (682843)

    Angle-resolved photoemission spectroscopy (ARPES) of bulk 2H-WSe2 for different crystal orientations linked to each other by time-reversal symmetry. This dataset supplements a manuscript, and was used to measure a new observable called time-reversal dichroism in photoelectron angular distributions (TRDAD), which quantifies the modulation of the photoemission intensity upon effective time-reversal operation. Experimental results are in quantitative agreement with both tight-binding model and state-of-the-art fully relativistic calculations performed using the one-step model of photoemission, unambiguously demonstrating that TRDAD reveals its orbital pseudospin texture counterpart.

  • Open Access English
    Authors: 
    Beaulieu, Samuel; Dong, Shuo; Tancogne-Dejean, Nicolas; Dendzik, Maciej; Pincelli, Tommaso; Maklar, Julian; Xian, R. Patrick; Sentef, Michael A.; Wolf, Martin; Rubio, Angel; +2 more
    Publisher: Zenodo
    Project: NSERC , EC | FLATLAND (682843), EC | OPTOlogic (899794), EC | QSpec-NewMat (694097)

    This work was funded by the Max Planck Society, the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [grant nos. ERC-2015-CoG-682843, ERC-2015-AdG694097, and H2020-FETOPEN-2018-2019-2020-01 (OPTOLogic, grant agreement no. 899794)], the Grupos Consolidados (IT1249-19); the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the Emmy Noether program (grant nos. RE 3977/1 and MS 2558/2-1); the Cluster of Excellence "Advanced Imaging of Matter" (AIM), the SFB925 "Light-induced dynamics and control of correlated quantum systems"; the Collaborative Research Center/Transregio 227 "Ultrafast SpinDynamics" (projects B07 and A09, project number 328545488); the FOR1700 project (project E5, project number 194370842); and the Priority Program SPP 2244 (project no. 443366970). The Flatiron Institute is a division of the Simons Foundation. S.B. acknowledges financial support from the NSERC-Banting Postdoctoral Fellowships Program. T. P. acknowledges financial support from the Alexander von Humboldt Fellowship program of the Alexander von Humboldt Stiftung. Time and angle-resolved photoemission spectroscopy (ARPES) of bulk Td-MoTe2 for p-polarized pump and probe. This dataset, measured at an absorbed fluence of 0.6 mJ/cm2, demonstrates the occurence of an abrupt change in the Fermi surface topology, also called Lifshitz transition. These results supplement a manuscript unveiling a nonequilibrium dynamical route toward ultrafast modification of the Fermi surface topology, experimentally demonstrated here for the first time. The combination of these measurements with state-of-the-art TDDFT+U simulations demonstrates that this nonequilibrium topological electronic transition finds its microscopic origin in the dynamical modification of the effective electronic correlations.