Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Alexander, Hötger"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-8 (2023)
Abstract Material-selective analysis of spectral X-ray imaging data requires prior knowledge of the energy dependence of the observed signal. Contrary to conventional X-ray imaging, where the material-specific attenuation coefficient is usually preci
Externí odkaz:
https://doaj.org/article/2db19298b936486685d53b858f3006a9
Autor:
Florian Sigger, Ines Amersdorffer, Alexander Hötger, Manuel Nutz, Jonas Kiemle, Takashi Taniguchi, Kenji Watanabe, Michael Förg, Jonathan Noe, Jonathan J. Finley, Alexander Högele, Alexander W. Holleitner, Thomas Hümmer, David Hunger, Christoph Kastl
Publikováno v:
The Journal of Physical Chemistry Letters, 13, 10291–10296
We utilize cavity-enhanced extinction spectroscopy to directly quantify the optical absorption of defects in MoS$_2$ generated by helium ion bombardment. We achieve hyperspectral imaging of specific defect patterns with a detection limit below 0.01%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6868da888fc6f527388c71876382bbc
https://doi.org/10.1021/acs.jpclett.2c02386
https://doi.org/10.1021/acs.jpclett.2c02386
Autor:
Chenjiang, Qian, Viviana, Villafañe, Pedro, Soubelet, Alexander, Hötger, Takashi, Taniguchi, Kenji, Watanabe, Nathan P, Wilson, Andreas V, Stier, Alexander W, Holleitner, Jonathan J, Finley
Publikováno v:
Physical review letters. 128(23)
Atomically thin semiconductors can be readily integrated into a wide range of nanophotonic architectures for applications in quantum photonics and novel optoelectronic devices. We report the observation of nonlocal interactions of "free" trions in pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::cb53eda3752cc17f7f33d7081a100aef
https://pubmed.ncbi.nlm.nih.gov/35749182
https://pubmed.ncbi.nlm.nih.gov/35749182
Autor:
Kai Müller, Noelia Fernandez, Anna Nolinder, Alexander Hötger, Philipp Zimmermann, Alexander W. Holleitner, Jonathan J. Finley
Publikováno v:
Nano Letters. 19:1172-1178
We demonstrate that prestructured metal nanogaps can be shaped on-chip to below 10 nm by femtosecond laser ablation. We explore the plasmonic properties and the nonlinear photocurrent characteristics of the formed tunnel junctions. The photocurrent c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bc11c4674a5533c0c7f6788308031cb
https://doi.org/10.1021/acs.nanolett.8b04612
https://doi.org/10.1021/acs.nanolett.8b04612
Autor:
Alexander, Hötger, Julian, Klein, Katja, Barthelmi, Lukas, Sigl, Florian, Sigger, Wolfgang, Männer, Samuel, Gyger, Matthias, Florian, Michael, Lorke, Frank, Jahnke, Takashi, Taniguchi, Kenji, Watanabe, Klaus D, Jöns, Ursula, Wurstbauer, Christoph, Kastl, Kai, Müller, Jonathan J, Finley, Alexander W, Holleitner
Publikováno v:
Nano letters. 21(2)
We demonstrate electrostatic switching of individual, site-selectively generated matrices of single photon emitters (SPEs) in MoS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::8a5014e89f5773ae3c8c130207b0bb65
https://pubmed.ncbi.nlm.nih.gov/33433221
https://pubmed.ncbi.nlm.nih.gov/33433221
Autor:
Takashi Taniguchi, Alexander Kerelsky, Ursula Wurstbauer, Elmar Mitterreiter, Sergio Rey, Frank Jahnke, Kai Müller, Valery Zwiller, Samuel Gyger, Alexander W. Holleitner, Kenji Watanabe, Matthias Florian, Klaus D. Jöns, Christoph Kastl, Frances M. Ross, Katja Barthelmi, Abhay Pasupathy, Lukas Sigl, Julian Klein, Jonathan J. Finley, Alexander Hötger
Publikováno v:
Quantum Nanophotonic Materials, Devices, and Systems 2020.
2D materials offer a wide range of perspectives for hosting highly localized 0D states, e.g. vacancy defects, that offer great potential for integrated quantum photonic applications. Here, we create individual defects that act as our single-photon em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46223ecb49722dacd310fb62e6d08f16
https://doi.org/10.1117/12.2570472
https://doi.org/10.1117/12.2570472
Autor:
Alexander W. Holleitner, Alexander Hötger, Jonathan J. Finley, Takashi Taniguchi, Kenji Watanabe, Marek Potemski, Matthias Florian, Andreas V. Stier, Julian Klein, Alexander Steinhoff, Frank Jahnke, Alex Delhomme, Clément Faugeras
Publikováno v:
Physical Review Research
Physical Review Research, American Physical Society, 2021, 3 (2), ⟨10.1103/PhysRevResearch.3.L022009⟩
Physical Review Research, American Physical Society, 2021, 3 (2), ⟨10.1103/PhysRevResearch.3.L022009⟩
We report magneto-optical spectroscopy of gated monolayer MoS$_2$ in high magnetic fields up to 28T and obtain new insights on the many-body interaction of neutral and charged excitons with the resident charges of distinct spin and valley texture. Fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30f05979ae375257b7b6704cf0d5bfba
Autor:
T. Taniguchi, Alexander Weber-Bargioni, Sergio Rey, Val Zwiller, Samuel Gyger, Kenji Watanabe, Lukas Sigl, Matthias Florian, Alexander W. Holleitner, Frank Jahnke, Ursula Wurstbauer, Christoph Kastl, Julian Klein, Kai Müller, Alexander Hötger, Michael Lorke, Jonathan J. Finley, Elmar Mitterreiter, Katja Barthelmi, Florian Sigger, Klaus D. Jöns
Publikováno v:
Applied Physics Letters. 117:070501
Precisely positioned and scalable single-photon emitters (SPEs) are highly desirable for applications in quantum technology. This Perspective discusses single-photon-emitting atomistic defects in monolayers of MoS2 that can be generated by focused He
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c48ea2b7c5090d1aef72d7c58669cd2e
https://doi.org/10.1063/5.0018557
https://doi.org/10.1063/5.0018557
Autor:
Moritz Fischer, Ali Sajid, Alexander Hötger, Kristian Sommer Thygesen, Sanshui Xiao, Wubs, M., Alexander Holleitner, Nicolas Stenger
Publikováno v:
Technical University of Denmark Orbit
Fischer, M, Sajid, A, Hötger, A, Thygesen, K S, Xiao, S, Wubs, M, Holleitner, A & Leitherer-Stenger, N 2022, ' Low-temperature spectroscopy of single-photon emitters in irradiation-engineered hexagonal boron nitride ', Conference on Lasers and Electro-Optics Pacific Rim 2022, Sapporo, Japan, 31/07/2022-05/08/2022 .
Fischer, M, Sajid, A, Hötger, A, Thygesen, K S, Xiao, S, Wubs, M, Holleitner, A & Leitherer-Stenger, N 2022, ' Low-temperature spectroscopy of single-photon emitters in irradiation-engineered hexagonal boron nitride ', Conference on Lasers and Electro-Optics Pacific Rim 2022, Sapporo, Japan, 31/07/2022-05/08/2022 .
To identify the microscopic origin of single-photon emitters in hexagonal boron nitride, we perform low-temperature spectroscopy. We observe strong photoluminescence at two different excitation lasers that hint at a phonon-assisted excitation scheme.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3633072588dfc24a7e0d52fda386c802
https://orbit.dtu.dk/en/publications/23748221-4f46-4886-9508-5612b964920a
https://orbit.dtu.dk/en/publications/23748221-4f46-4886-9508-5612b964920a