Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Nogajewski, Karol"'
Autor:
Kapuscinski, Piotr, Slobodeniuk, Artur O., Delhomme, Alex, Faugeras, Clément, Grzeszczyk, Magdalena, Nogajewski, Karol, Watanabe, Kenji, Taniguchi, Takashi, Potemski, Marek
Publikováno v:
Phys. Rev. B 110, 155439 (2024)
Semiconducting transition metal dichalcogenides of group VI are well-known for their prominent excitonic effects and the transition from an indirect to a direct band gap when reduced to monolayers. While considerable efforts have elucidated the Rydbe
Externí odkaz:
http://arxiv.org/abs/2411.02241
Autor:
Olkowska-Pucko, Katarzyna, Blundo, Elena, Zawadzka, Natalia, Cianci, Salvatore, Vaclavkova, Diana, Kapuściński, Piotr, Jana, Dipankar, Pettinari, Giorgio, Felici, Marco, Nogajewski, Karol, Bartos, Miroslav, Watanabe, Kenji, Taniguchi, Takashi, Faugeras, Clement, Potemski, Marek, Babiński, Adam, Polimeni, Antonio, Molas, Maciej R.
Publikováno v:
2D Materials 10, 015018 (2023)
The possibility of almost linear tuning of the band gap and of the electrical and optical properties in monolayers (MLs) of semiconducting transition metal dichalcogenide (S-TMD) alloys opens up the way to fabricate materials with on-demand character
Externí odkaz:
http://arxiv.org/abs/2209.10521
Autor:
Hahn, Thilo, Vaclavkova, Diana, Bartos, Miroslav, Nogajewski, Karol, Potemski, Marek, Watanabe, Kenji, Taniguchi, Takashi, Machnikowski, Paweł, Kuhn, Tilmann, Kasprzak, Jacek, Wigger, Daniel
Publikováno v:
Adv. Sci. 9, 2103813 (2022)
Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach the limit of a purely homogeneously broadened exciton system. On such a
Externí odkaz:
http://arxiv.org/abs/2110.02633
Autor:
Rodek, Aleksander, Hahn, Thilo, Kasprzak, Jacek, Kazimierczuk, Tomasz, Nogajewski, Karol, Połczyńska, Karolina, Watanabe, Kenji, Taniguchi, Takashi, Kuhn, Tilmann, Machnikowski, Paweł, Potemski, Marek, Wigger, Daniel, Kossacki, Piotr
Publikováno v:
Nanophotonics 10, 2717-2728 (2021)
Using a novel approach to ultrafast resonant pump-probe spectroscopy we investigate the spectral shape and dynamics of absorption features related to the A exciton in an hBN/MoSe$_2$/hBN van der Waals heterostructure. While in a pure two-level system
Externí odkaz:
http://arxiv.org/abs/2103.05328
Autor:
Smoleński, Tomasz, Kazimierczuk, Tomasz, Goryca, Mateusz, Nogajewski, Karol, Potemski, Marek, Kossacki, Piotr
Zeeman effect induced by the magnetic field introduces a splitting between the two valleys at K$^+$ and K$^-$ points of the Brillouin zone in monolayer semiconducting transition metal dichalcogenides. In consequence, the photoluminescence signal exhi
Externí odkaz:
http://arxiv.org/abs/2005.14095
Autor:
Jakubczyk, Tomasz, Bartos, Miroslav, Nogajewski, Karol, Scarpelli, Lorenzo, Langbein, Wolfgang, Potemski, Marek, Kasprzak, Jacek
We investigate dynamics of resonantly excited excitons in single-layers of MoSe$_2$ and WS$_2$ down to 4.5 K. To this end, we measure the delay dependence of the heterodyne four-wave mixing (FWM) amplitude induced by three, short laser pulses. This s
Externí odkaz:
http://arxiv.org/abs/2002.01720
Autor:
Boule, Caroline, Vaclavkova, Diana, Bartos, Miroslav, Nogajewski, Karol, Zdrazil, Lukas, Taniguchi, Takashi, Watanabe, Kenji, Potemski, Marek, Kasprzak, Jacek
Publikováno v:
Phys. Rev. Materials 4, 034001 (2020)
We perform coherent nonlinear spectroscopy of excitons in single-layers of MoSe$_2$ and WSe$_2$ encapsulated between thin films of hexagonal boron nitride. Employing four-wave mixing microscopy we identify virtually disorder free areas, generating ex
Externí odkaz:
http://arxiv.org/abs/2002.01436
Autor:
Łopion, Aleksandra, Goryca, Mateusz, Smoleński, Tomasz, Oreszczuk, Kacper, Nogajewski, Karol, Molas, Maciej R., Potemski, Marek, Kossacki, Piotr
At cryogenic temperatures, the photoluminescence spectrum of monolayer WSe2features a num-ber of lines related to the recombination of so-called localized excitons. The intensity of these lines strongly decreases with increasing temperature. In order
Externí odkaz:
http://arxiv.org/abs/1912.02573
Autor:
Arora, Ashish, Koperski, Maciej, Slobodeniuk, Artur, Nogajewski, Karol, Schmidt, Robert, Schneider, Robert, Molas, Maciej R., de Vasconcellos, Steffen Michaelis, Bratschitsch, Rudolf, Potemski, Marek
Publikováno v:
2D Materials 6, 015010 (2019)
Monolayers and multilayers of semiconducting transition metal dichalcogenides (TMDCs) offer an ideal platform to explore valley-selective physics with promising applications in valleytronics and information processing. Here we manipulate the energeti
Externí odkaz:
http://arxiv.org/abs/1811.04023
Autor:
Molas, Maciej R., Gołasa, Katarzyna, Bala, Łukasz, Nogajewski, Karol, Bartos, Miroslav, Potemski, Marek, Babiński, Adam
Publikováno v:
Scientific Reports 9, 1989 (2019)
The effect of bis(trifluoromethane) sulfonimide (TFSI, superacid) treatment on the optical properties of MoS$_2$ monolayers is investigated by means of photoluminescence, reflectance contrast and Raman scattering spectroscopy employed in a broad temp
Externí odkaz:
http://arxiv.org/abs/1809.08445