Zobrazeno 1 - 10
of 411
pro vyhledávání: '"Eckstein, Martin"'
Recent seminal experiments have utilized time-resolved X-ray absorption spectroscopy (XAS) to investigate the ultrafast photo-induced renormalization of the electron interaction (''Hubbard $U$'') in Mott and charge transfer insulators. In this paper,
Externí odkaz:
http://arxiv.org/abs/2409.06314
Cavity electrodynamics is emerging as a promising tool to control chemical processes and quantum material properties. In this work we develop a formalism to describe the cavity mediated energy exchange between a material and its electromagnetic envir
Externí odkaz:
http://arxiv.org/abs/2403.00851
Autor:
Svendsen, Mark Kamper, Ruggenthaler, Michael, Hübener, Hannes, Schäfer, Christian, Eckstein, Martin, Rubio, Angel, Latini, Simone
When light and matter interact strongly, the coupled system inherits properties from both constituents. It is consequently possible to alter the properties of either by engineering the other. This intriguing possibility has lead to the emergence of t
Externí odkaz:
http://arxiv.org/abs/2312.17374
Autor:
Künzel, Fabian, Erpenbeck, André, Werner, Daniel, Arrigoni, Enrico, Gull, Emanuel, Cohen, Guy, Eckstein, Martin
A description of long-lived photo-doped states in Mott insulators is challenging, as it needs to address exponentially separated timescales. We demonstrate how properties of such states can be computed using numerically exact steady state techniques,
Externí odkaz:
http://arxiv.org/abs/2311.13933
Publikováno v:
Phys. Rev. B 109, 085149 (2024)
We investigate the potential to induce long-range spin interactions in a Mott insulator via the quantum electromagnetic field of a cavity. The coupling between light and spins is inherently non-linear, and occurs via multi-photon processes like Raman
Externí odkaz:
http://arxiv.org/abs/2311.01339
The study of nonequilibrium phenomena in interacting lattice systems can provide new perspectives on correlation effects, and information on metastable states of matter. Mott insulators are a promising class of systems for nonequilibrium studies, sin
Externí odkaz:
http://arxiv.org/abs/2310.05201
Publikováno v:
Phys. Rev. B 108, 245157 (2023)
Raman spectroscopy uses light scattering to extract information on low-energy excitations of solids. The Raman process is described by diagrams which are fourth order in the light-matter interaction, and in particular the resonant contribution, which
Externí odkaz:
http://arxiv.org/abs/2309.02866
Autor:
Lojewski, Tobias, Golez, Denis, Ollefs, Katharina, Guyader, Loïc Le, Kämmerer, Lea, Rothenbach, Nico, Engel, Robin Y., Miedema, Piter S., Beye, Martin, Chiuzbăian, Gheorghe S., Carley, Robert, Gort, Rafael, Van Kuiken, Benjamin E., Mercurio, Giuseppe, Schlappa, Justina, Yaroslavtsev, Alexander, Scherz, Andreas, Döring, Florian, David, Christian, Wende, Heiko, Bovensiepen, Uwe, Eckstein, Martin, Werner, Philipp, Eschenlohr, Andrea
Photo-doped states in strongly correlated charge transfer insulators are characterized by $d$-$d$ and $d$-$p$ interactions and the resulting intertwined dynamics of charge excitations and local multiplets. Here we use femtosecond x-ray absorption spe
Externí odkaz:
http://arxiv.org/abs/2305.10145
Autor:
Choi, Dongsung, Yue, Changming, Azoury, Doron, Porter, Zachary, Chen, Jiyu, Petocchi, Francesco, Baldini, Edoardo, Lv, Baiqing, Mogi, Masataka, Su, Yifan, Wilson, Stephen D., Eckstein, Martin, Werner, Philipp, Gedik, Nuh
Sr$_2$IrO$_4$ has attracted a lot of attention due to its structural and electronic similarities to La$_2$CuO$_4$ which is the parent compound of high-T$_c$ superconducting cuprates. It was proposed to be a strong spin-orbit coupled J$_{eff}$ = 1/2 M
Externí odkaz:
http://arxiv.org/abs/2305.07619
Recent theoretical studies showed that the electronic structure of 1$T$-TaS$_2$ in the low-temperature commensurate charge density wave phase exhibits a nontrivial interplay between band-insulating and Mott insulating behavior. This has important imp
Externí odkaz:
http://arxiv.org/abs/2212.09583