Zobrazeno 1 - 10
of 1 513
pro vyhledávání: '"Vollhardt, D."'
Autor:
Weh, A., Zhang, Y., Östlin, A., Terletska, H., Bauernfeind, D., Tam, K. -M., Evertz, H. G., Byczuk, K., Vollhardt, D., Chioncel, L.
Publikováno v:
Phys. Rev. B 104, 045127 (2021)
To explore correlated electrons in the presence of local and non-local disorder, the Blackman-Esterling-Berk method for averaging over off-diagonal disorder is implemented into dynamical mean-field theory using tensor notation. The impurity model com
Externí odkaz:
http://arxiv.org/abs/2105.06971
Publikováno v:
Phys. Rev. B 102, 024306 (2020)
We calculate the single-particle momentum distribution of a quantum many-particle system in the presence of the Coulomb interaction and a confining potential. The region of intermediate momenta, where the confining potential dominates, marks a crosso
Externí odkaz:
http://arxiv.org/abs/2005.05090
Publikováno v:
In Advances in Colloid and Interface Science November 2023 321
Autor:
Östlin, A., Zhang, Y., Terletska, H., Beiuseanu, F., Popescu, V., Byczuk, K., Vitos, L., Jarrell, M., Vollhardt, D., Chioncel, L.
Publikováno v:
Phys. Rev. B 101, 014210 (2020)
By merging single-site typical medium theory with density functional theory we introduce a self-consistent framework for electronic structure calculations of materials with substitutional disorder which takes into account Anderson localization. The s
Externí odkaz:
http://arxiv.org/abs/1911.02393
Autor:
Appelt, W. H., Östlin, A., Di Marco, I., Leonov, I., Sekania, M., Vollhardt, D., Chioncel, L.
Publikováno v:
Phys. Rev. B 101, 075120 (2020)
We compute the phonon dispersion, density of states, and the Gr\"uneisen parameters of bulk palladium in the combined density functional theory (DFT) and dynamical mean-field theory (DMFT). We find good agreement with experimental results for ground
Externí odkaz:
http://arxiv.org/abs/1812.01507
Autor:
Appelt, W. H., Droghetti, A., Chioncel, L., Radonjic, M. M., Munoz, E., Kirchner, S., Vollhardt, D., Rungger, I.
Publikováno v:
Nanoscale 10, 17738 (2018)
Stable organic radicals integrated into molecular junctions represent a practical realization of the single-orbital Anderson impurity model. Motivated by recent experiments for perchlorotriphenylmethyl (PTM) molecules contacted to gold electrodes, we
Externí odkaz:
http://arxiv.org/abs/1809.05779
Publikováno v:
Eur. Phys. J. B 92, 23 (2019)
We formulate real-space dynamical mean-field theory within scattering theory. Thereby the Friedel sum rule is derived for interacting lattice fermions at zero temperature.
Comment: 7 pages, no figures, extended and corrected version
Comment: 7 pages, no figures, extended and corrected version
Externí odkaz:
http://arxiv.org/abs/1807.08559
Publikováno v:
Phys. Rev. B 97, 115165 (2018)
We report a detailed theoretical study of the electronic structure, spectral properties, and lattice parameters of bulk FeSe under pressure using a fully charge self-consistent implementation of the density functional theory plus dynamical mean-field
Externí odkaz:
http://arxiv.org/abs/1802.01850
Publikováno v:
Eur. Phys. J. Special Topics 226, 2641 (2017)
Materials with correlated electrons often respond very strongly to external or internal influences, leading to instabilities and states of matter with broken symmetry. This behavior can be studied theoretically either by evaluating the linear respons
Externí odkaz:
http://arxiv.org/abs/1705.00875