Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Gunnar Schönhoff"'
Autor:
Camiel van Efferen, Jan Berges, Joshua Hall, Erik van Loon, Stefan Kraus, Arne Schobert, Tobias Wekking, Felix Huttmann, Eline Plaar, Nico Rothenbach, Katharina Ollefs, Lucas Machado Arruda, Nick Brookes, Gunnar Schönhoff, Kurt Kummer, Heiko Wende, Tim Wehling, Thomas Michely
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
A charge density wave (CDW) normally creates a gap at the Fermi level, inducing a metal-insulator transition. Here, the authors report that a CDW gap resides in the unoccupied states but induces a topological metal-metal transition at the Fermi level
Externí odkaz:
https://doaj.org/article/0fe1cd1e04ef4ca6be5f8efac4c2e22e
Autor:
Camiel, van Efferen, Jan, Berges, Joshua, Hall, Erik, van Loon, Stefan, Kraus, Arne, Schobert, Tobias, Wekking, Felix, Huttmann, Eline, Plaar, Nico, Rothenbach, Katharina, Ollefs, Lucas Machado, Arruda, Nick, Brookes, Gunnar, Schönhoff, Kurt, Kummer, Heiko, Wende, Tim, Wehling, Thomas, Michely
Publikováno v:
Nature Communications
In the standard model of charge density wave (CDW) transitions, the displacement along a single phonon mode lowers the total electronic energy by creating a gap at the Fermi level, making the CDW a metal–insulator transition. Here, using scanning t
Autor:
Matthias Florian, Frank Jahnke, Tim O. Wehling, Alexander Steinhoff, Gunnar Schönhoff, Malte Rösner
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-11 (2017)
Nature Communications
Nature Communications
When electron-hole pairs are excited in a semiconductor, it is a priori not clear if they form a plasma of unbound fermionic particles or a gas of composite bosons called excitons. Usually, the exciton phase is associated with low temperatures. In at
Autor:
Chun Hung Lui, Christopher Gies, Malte Rösner, Yi-Hsien Lee, Frank Jahnke, Jian Feng Kong, Alexander Steinhoff, Tim O. Wehling, Edbert J. Sie, Pablo Jarillo-Herrero, Gunnar Schönhoff, Qing Ma, Nuh Gedik
Publikováno v:
Nano Letters
We report a rare atom-like interaction between excitons in monolayer WS2, measured using ultrafast absorption spectroscopy. At increasing excitation density, the exciton resonance energy exhibits a pronounced redshift followed by an anomalous blueshi
Publikováno v:
Surface Science. 694:121561
The adsorption of S on Si(111)- 7 × 7 has been investigated for different preparation schemes and parameters. S was supplied from an electrochemical Ag2S cell. For room temperature adsorption and subsequent annealing, no ordered S induced reconstruc
Autor:
Daniel Erben, Frank Jahnke, Gunnar Schönhoff, Christopher Gies, Tim O. Wehling, Alexander Steinhoff
Publikováno v:
Physical Review B. 98
Monolayers of transition-metal dichalcogenides (TMDCs) exhibit an exceptionally strong Coulomb interaction between charge carriers due to the two-dimensional carrier confinement in connection with weak dielectric screening. High densities of excited
Autor:
Pablo Jarillo-Herrero, Qiong Ma, Nuh Gedik, Alexander Steinhoff, Tim O. Wehling, Yi-Hsien Lee, Christopher Gies, Malte Rösner, Edbert J. Sie, Gunnar Schönhoff, Chun Hung Lui, Frank Jahnke, J. Kong
Publikováno v:
2D Photonic Materials and Devices.
Atomically thin transition-metal dichalcogenide (TMD) semiconductors possess strong Coulomb interactions due to reduced dielectric screening, leading to the formation of excitons with exceptionally large binding energies. The enhanced stability of ex
Autor:
Malte Schüler, Gunnar Schönhoff, Tim O. Wehling, E. Kamil, Malte Rösner, Jan Berges, Giorgio Sangiovanni
Using ab-initio calculations we reveal the nature of the insulating phase recently found experimentally in monolayer 1T-NbSe$_2$. We find soft phonon modes in a large parts of the Brillouin zone indicating the strong-coupling nature of a charge-densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32b43a135b60028cc4283f2b35ee883a
We analyze the interplay of spin-valley coupling, orbital physics and magnetic anisotropy taking place at single magnetic atoms adsorbed on semiconducting transition-metal dichalcogenides, MX$_2$ (M = Mo, W; X = S, Se). Orbital selection rules turn o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a7138180ccbb215d270fab02308fdf1
http://arxiv.org/abs/1706.08365
http://arxiv.org/abs/1706.08365
Publikováno v:
Npj Quantum Materials, 3, 1-8
npj Quantum Materials, Vol 3, Iss 1, Pp 1-8 (2018)
Npj Quantum Materials, 3, pp. 1-8
npj Quantum Materials
npj Quantum Materials, Vol 3, Iss 1, Pp 1-8 (2018)
Npj Quantum Materials, 3, pp. 1-8
npj Quantum Materials
The interplay of Coulomb and electron–phonon interactions with thermal and quantum fluctuations facilitates rich phase diagrams in two-dimensional electron systems. Layered transition metal dichalcogenides hosting charge, excitonic, spin and superc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::891e760df0e56b47a4017eca36115c65