Excitonic absorption signatures of twisted bilayer WSe2 by electron energy-loss spectroscopy

Autor: Steffi Y. Woo, Alberto Zobelli, Robert Schneider, Ashish Arora, Johann A. Preuß, Benjamin J. Carey, Steffen Michaelis de Vasconcellos, Maurizia Palummo, Rudolf Bratschitsch, Luiz H. G. Tizei

Publikováno v: Physical Review B. 107

Moir\'{e} twist angle underpins the interlayer interaction of excitons in twisted van der Waals hetero- and homo-structures. The influence of twist angle on the excitonic absorption of twisted bilayer tungsten diselenide (WSe$_{2}$) has been investig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9991e38acf267d4325c24d4d67166c9
https://doi.org/10.1103/physrevb.107.155429

Cathodoluminescence excitation spectroscopy: nanoscale imaging of excitation pathways

Autor: Nadezda Varkentina, Yves Auad, Steffi Y. Woo, Alberto Zobelli, Laura Bocher, Jean-Denis Blazit, Xiaoyan Li, Marcel Tencé, Kenji Watanabe, Takashi Taniguchi, Odile Stéphan, Mathieu Kociak, Luiz H. G. Tizei

Publikováno v: Science Advances
Science Advances, 2022, ⟨10.1126/sciadv.abq4947⟩

International audience; Following the lifespan of optical excitations from their creation to decay into photons is crucial in understanding materials optical properties. Macroscopically, techniques such as the photoluminescence excitation spectroscop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c97e1d2e457a096c258c83a9418213e5
https://hal.science/hal-03806993

Spatiotemporal imaging of 2D polariton wave packet dynamics using free electrons

Autor: Yuval Adiv, Ori Reinhardt, Steffi Y. Woo, Michael Yannai, Ido Kaminer, Hanan Herzig Sheinfux, Luiz H. G. Tizei, Frank H. L. Koppens, James H. Edgar, Yaniv Kurman, Raphael Dahan, Kangpeng Wang, Mathieu Kociak, Jiahan Li

Publikováno v: Science
Science, American Association for the Advancement of Science, 2021, 372 (6547), pp.1181-1186. ⟨10.1126/science.abg9015⟩
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Imaging polariton dynamics Two-dimensional (2D) materials can confine light to volumes much shorter than the wavelength, and, together, the long propagation lengths make them attractive materials for developing nanophotonic platforms. Characterizing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5191312664ac3b9a5be3e4a598fb0b98
https://doi.org/10.1126/science.abg9015

Correlative Luminescence and Absorption Spectroscopy from Monolayer WSe2 at the Nanoscale

Autor: Ashish Arora, Steffi Y. Woo, Benjamin J. Carey, Fuhui Shao, Robert Schneider, Luiz H. G. Tizei, Steffen Michaelis, Johann A. Preuß, Rudolf Bratschitsch

Publikováno v: Microscopy and Microanalysis. 27:1470-1472

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed694f138277578e79326faea5365266
https://doi.org/10.1017/s1431927621005432

Nanoscale Modification of WS

Autor: Noémie, Bonnet, Hae Yeon, Lee, Fuhui, Shao, Steffi Y, Woo, Jean-Denis, Blazit, Kenji, Watanabe, Takashi, Taniguchi, Alberto, Zobelli, Odile, Stéphan, Mathieu, Kociak, Silvija, Gradečak, Luiz H G, Tizei

Publikováno v: Nano letters. 21(24)

Structural, electronic, and chemical nanoscale modifications of transition metal dichalcogenide monolayers alter their optical properties. A key missing element for complete control is a direct spatial correlation of optical response to nanoscale mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::df4cfa21b3ca2e02f3af951374a14489
https://pubmed.ncbi.nlm.nih.gov/34878799