Zobrazeno 1 - 10
of 255
pro vyhledávání: '"Wehling T"'
Autor:
Hu, H., Rai, G., Crippa, L., Herzog-Arbeitman, J., Călugăru, D., Wehling, T., Sangiovanni, G., Valenti, R., Tsvelik, A. M., Bernevig, B. A.
We use the topological heavy fermion (THF) model and its Kondo Lattice (KL) formulation to study the symmetric Kondo state in twisted bilayer graphene. Via a large-N approximation, we find a symmetric Kondo (SK) state in KL mode at fillings $\nu=0,\p
Externí odkaz:
http://arxiv.org/abs/2301.04673
Autor:
Link, S., Forti, S., Stöhr, A., Küster, K., Rösner, M., Hirschmeier, D., Chen, C., Avila, J., Asensio, M. C., Zakharov, A. A., Wehling, T. O., Lichtenstein, A. I., Katsnelson, M. I., Starke, U.
Publikováno v:
Phys. Rev. B 100, 121407(R), 2019
Exotic ordered ground states driven by electronic correlations are expected to be induced in monolayer graphene when doped to the Van Hove singularity. Such doping levels are reached by intercalating Gd in graphene on SiC(0001), resulting in a strong
Externí odkaz:
http://arxiv.org/abs/1909.08023
Publikováno v:
Phys. Rev. B 100, 161102 (2019)
Magic-angle twisted bilayer graphene (MA-tBLG) has appeared as a tunable testing ground to investigate the conspiracy of electronic interactions, band structure, and lattice degrees of freedom to yield exotic quantum many-body ground states in a two-
Externí odkaz:
http://arxiv.org/abs/1904.11765
Publikováno v:
SciPost Phys. 6, 067 (2019)
In contrast to the Hubbard model, the extended Hubbard model, which additionally accounts for non-local interactions, lacks systemic studies of thermodynamic properties especially across the metal-insulator transition. Using a variational principle,
Externí odkaz:
http://arxiv.org/abs/1903.09947
Publikováno v:
Phys. Rev. B 98, 035434 (2018)
Monolayers of transition metal dichalcogenides (TMDCs) exhibit an exceptionally strong Coulomb interaction between charge carriers due to the two-dimensional carrier confinement in connection with weak dielectric screening. High densities of excited
Externí odkaz:
http://arxiv.org/abs/1804.08427
Autor:
Kamil, E., Berges, J., Schönhoff, G., Rösner, M., Schüler, M., Sangiovanni, G., Wehling, T. O.
Publikováno v:
E Kamil et al 2018 J. Phys.: Condens. Matter 30 325601
Using ab-initio calculations we reveal the nature of the insulating phase recently found experimentally in monolayer 1T-NbSe$_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:
http://arxiv.org/abs/1804.03898
Publikováno v:
Phys. Rev. B 98, 045304 (2018)
Atomically thin layers of transition metal dichalcogenides (TMDCs) exhibit exceptionally strong Coulomb interaction between charge carriers due to the two-dimensional carrier confinement in connection with weak dielectric screening. The van der Waals
Externí odkaz:
http://arxiv.org/abs/1804.01352
Plasmonic excitations behave fundamentally different in layered materials in comparison to bulk systems. They form gapless modes, which in turn couple at low energies to the electrons. Thereby they can strongly influence superconducting instabilities
Externí odkaz:
http://arxiv.org/abs/1803.04576
Autor:
Florian, M., Hartmann, M., Steinhoff, A., Klein, J., Holleitner, A., Finley, J. J., Wehling, T. O., Kaniber, M., Gies, C.
Publikováno v:
Nano Lett. 18, 2725 (2018)
The electronic and optical properties of monolayer transition-metal dichalcogenides (TMDs) and van der Waals heterostructures are strongly subject to their dielectric environment. In each layer the field lines of the Coulomb interaction are screened
Externí odkaz:
http://arxiv.org/abs/1712.05607
Publikováno v:
Eur. Phys. J. Special Topics 226, 2615 (2017)
Nanostructures with open shell transition metal or molecular constituents host often strong electronic correlations and are highly sensitive to atomistic material details. This tutorial review discusses method developments and applications of theoret
Externí odkaz:
http://arxiv.org/abs/1707.08333