Zobrazeno 1 - 10
of 222
pro vyhledávání: '"Jahnke, Frank"'
The efficient light-matter interaction in combination with the small volume occupied by monolayer transition-metal dichalcogenides (TMDCs) makes this material class a notable option as gain layer in future opto-electronic devices. Many-body effects o
Externí odkaz:
http://arxiv.org/abs/2409.17857
Autor:
Lorke, Michael, Khanonkin, Igor, Michael, Stephan, Reithmaier, Johann Peter, Eisenstein, Gadi, Jahnke, Frank
In quantum-dot tunnel-injection lasers, the excited charge carriers are efficiently captured from the bulk states via an injector quantum well and then transferred into the quantum dots via a tunnel barrier. The alignment of the electronic levels is
Externí odkaz:
http://arxiv.org/abs/2402.18165
Autor:
Steinhoff, Alexander, Wietek, Edith, Florian, Matthias, Schulz, Tommy, Taniguchi, Takashi, Watanabe, Kenji, Zhao, Shen, Högele, Alexander, Jahnke, Frank, Chernikov, Alexey
Publikováno v:
Phys. Rev. X 14, 031025 (2024)
Exciton-exciton interactions are key to understanding non-linear optical and transport phenomena in van der Waals heterobilayers, which emerged as versatile platforms to study correlated electronic states. We present a combined theory-experiment stud
Externí odkaz:
http://arxiv.org/abs/2310.18328
Autor:
Lorke, Michael, Khanonkin, Igor, Michael, Stephan, Reithmaier, Johann Peter, Eisenstein, Gadi, Jahnke, Frank
Tunneling-injection structures are incorporated in semiconductor lasers in order to overcome the fundamental dynamical limitation due to hot carrier injection by providing a carrier transport path from a cold carrier reservoir. The tunneling process
Externí odkaz:
http://arxiv.org/abs/2205.15715
Autor:
Rosati, Roberto, Lengers, Frank, Carmesin, Christian, Florian, Matthias, Kuhn, Tilmann, Jahnke, Frank, Lorke, Michael, Reiter, Doris E.
Nanobubbles formed in monolayers of transition metal dichalcogenides (TMDCs) on top of a substrate feature localized potentials, in which electrons can be captured. We show that the captured electronic density can exhibit a non-trivial spatiotemporal
Externí odkaz:
http://arxiv.org/abs/2111.09237
Autor:
Klein, Julian, Florian, Matthias, Hötger, Alexander, Steinhoff, Alexander, Delhomme, Alex, Taniguchi, Takashi, Watanabe, Kenji, Jahnke, Frank, Holleitner, Alexander W., Potemski, Marek, Faugeras, Clément, Stier, Andreas V., Finley, Jonathan J.
Publikováno v:
Phys. Rev. B 105, L041302 (2022)
We report magneto-photoluminescence spectroscopy of gated MoS$_2$ monolayers in high magnetic fields to 28 T. At B = 0T and electron density $n_s\sim 10^{12}cm^-2$, we observe three trion resonances that cannot be explained within a single-particle p
Externí odkaz:
http://arxiv.org/abs/2109.06281
Auger-like exciton-exciton annihilation (EEA) is considered the key fundamental limitation to quantum yield in devices based on excitons in two-dimensional (2d) materials. Since it is challenging to experimentally disentangle EEA from competing proce
Externí odkaz:
http://arxiv.org/abs/2106.15973
Autor:
Klein, Julian, Pham, Thang, Thomsen, Joachim Dahl, Curtis, Jonathan B., Lorke, Michael, Florian, Matthias, Steinhoff, Alexander, Wiscons, Ren A., Luxa, Jan, Sofer, Zdenek, Jahnke, Frank, Narang, Prineha, Ross, Frances M.
Publikováno v:
Nature Communications 13, 5420 (2022)
Controlling magnetism in low dimensional materials is essential for designing devices that have feature sizes comparable to several critical length scales that exploit functional spin textures, allowing the realization of low-power spintronic and mag
Externí odkaz:
http://arxiv.org/abs/2107.00037
Autor:
Schall, Johannes, Deconinck, Marielle, Bart, Nikolai, Florian, Matthias, von Helversen, Martin, Dangel, Christian, Schmidt, Ronny, Bremer, Lucas, Bopp, Frederik, Hüllen, Isabell, Gies, Christopher, Reuter, Dirk, Wieck, Andreas D., Rodt, Sven, Finley, Jonathan J., Jahnke, Frank, Ludwig, Arne, Reitzenstein, Stephan
Self-organized semiconductor quantum dots represent almost ideal two-level systems, which have strong potential to applications in photonic quantum technologies. For instance, they can act as emitters in close-to-ideal quantum light sources. Coupled
Externí odkaz:
http://arxiv.org/abs/2101.03630
In atomically thin semiconductors based on transition metal dichalcogenides, photoexcitation can be used to generate high densities of electron-hole pairs. Due to optical nonlinearities, which originate from Pauli blocking and many-body effects of th
Externí odkaz:
http://arxiv.org/abs/2012.07642