Publications

 

Preprints


Tracking the Footprints of Spin Fluctuations: A Multi-Method, Multi-Messenger Study of the Two-Dimensional Hubbard Model

Thomas Schäfer, Nils Wentzell, Fedor Šimkovic IV, Yuan-Yao He, Cornelia Hille, Marcel Klett, Christian J. Eckhardt, Behnam Arzhang, Viktor Harkov, François-Marie Le Régent, Alfred Kirsch, Yan Wang, Aaram J. Kim, Evgeny Kozik, Evgeny A. Stepanov, Anna Kauch, Sabine Andergassen, Philipp Hansmann, Daniel Rohe, Yuri M. Vilk, James P. F. LeBlanc, Shiwei Zhang, A.-M. S. Tremblay, Michel Ferrero, Olivier Parcollet, Antoine Georges

arXiv:2006.10769 (2020)


Anisotropy of electronic correlations: On the applicability of local theories to layered materials

K. Klebel, T. Schäfer, A. Toschi, and J. M. Tomczak

arXiv:2005.01369 (2020)


Fingerprints of the local moment formation and its Kondo screening in the generalized susceptibilities of many-electron problems

P. Chalupa, T. Schäfer, M. Reitner, S. Andergassen, and A. Toschi

arXiv:2003.07829 (2020)

 

Journal publications


Real-space cluster dynamical mean-field theory: Center focused extrapolation on the one- and two particle level

M. Klett, N. Wentzell, T. Schäfer, F. Simkovic IV, O. Parcollet, S. Andergassen, and P. Hansmann

Phys. Rev. Research 2, 033476 (2020)arXiv


Quantum criticality in the two-dimensional periodic Anderson model

T. Schäfer, A. A. Katanin, M. Kitatani, A. Toschi, and K. Held

Phys. Rev. Lett. 122, 227201 (2019)arXiv


Why the critical temperature of high-Tc cuprate superconductorsis so low: The importance of the dynamical vertex structure

M. Kitatani, T. Schäfer, H. Aoki, and K. Held

Phys. Rev. B 99, 041115(R) (2019)arXiv


Divergences of the irreducible vertex functions in correlated metallic systems: Insights from the Anderson Impurity Model

P. Chalupa, P. Gunacker, T. Schäfer, K. Held, and A. Toschi

Phys. Rev. B 97, 245136 (2018)arXiv


Complementary views on electron spectra: From Fluctuation Diagnostics to real space correlations

O. Gunnarsson, J. Merino, T. Schäfer, G. Sangiovanni, G. Rohringer, and A. Toschi

Phys. Rev. B 97, 125134 (2018)arXiv


Breakdown of traditional many-body theories for correlated electrons

O. Gunnarsson, G. Rohringer, T. Schäfer, G. Sangiovanni, and A. Toschi

Phys. Rev. Lett. 119, 056402 (2017)arXiv


Interplay of correlations and Kohn anomalies in three dimensions: quantum criticality with a twist

T. Schäfer, A. A. Katanin, K. Held, and A. Toschi

Phys. Rev. Lett. 119, 046402 (2017)arXiv


Non-perturbative landscape of the Mott-Hubbard transition: Multiple divergence lines around the critical endpoint

T. Schäfer, S. Ciuchi, M. Wallerberger, P. Thunström, O. Gunnarsson, G. Sangiovanni, G. Rohringer, and A. Toschi

Phys. Rev. B 94, 235108 (2016)arXiv


Parquet decomposition calculations of the electronic self-energy

O. Gunnarsson, T. Schäfer, J. P. F. LeBlanc, J. Merino, G. Sangiovanni, G. Rohringer, and A. Toschi

Phys. Rev. B 93, 245102 (2016)arXiv


Momentum structure of the self-energy and its parametrization for the two-dimensional Hubbard model

P. Pudleiner, T. Schäfer, D. Rost, G. Li, K. Held, and N. Blümer

Phys. Rev. B 93, 195134 (2016)arXiv


Fluctuation Diagnostics of the Electron Self-Energy: Origin of the Pseudogap Physics

O. Gunnarsson, T. Schäfer, J. LeBlanc, E. Gull, J. Merino, G. Sangiovanni, G. Rohringer, and A. Toschi

Phys. Rev. Lett. 114, 236402 (2015)arXiv


Separability of dynamical and nonlocal correlations in three dimensions

T. Schäfer, A. Toschi, and Jan M. Tomczak

Phys. Rev. B 91, 121107(R) (2015)arXiv


Fate of the false Mott-Hubbard transition in two dimensions

T. Schäfer, F. Geles, D. Rost, G. Rohringer, E. Arrigoni, K. Held, N. Blümer, M. Aichhorn, and A. Toschi

Phys. Rev. B. 91, 125109 (2015)arXiv


Dynamical vertex approximation in its parquet implementation: Application to Hubbard nanorings

A. Valli, T. Schäfer, P. Thunström, G. Rohringer, S. Andergassen, G. Sangiovanni, K. Held, and A. Toschi

Phys. Rev. B 91, 115115 (2015)arXiv


Divergent Precursors of the Mott-Hubbard Transition at the Two-Particle Level

T. Schäfer, G. Rohringer, O. Gunnarsson, S. Ciuchi, G. Sangiovanni, and A. Toschi

Phys. Rev. Lett. 110, 246405 (2013)arXiv

 

Conference Proceedings


Fluctuation Diagnostics of Electronic Spectra

O. Gunnarsson, T. Schäfer, J. LeBlanc, E. Gull, J. Merino, G. Sangiovanni, G. Rohringer, and A. Toschi

Proceedings of the Vienna Young Scientists Symposium, 9.-10.06.2016


Dynamical vertex approximation for the two-dimensional Hubbard model

T. Schäfer, A. Toschi, and K. Held

J. Magn. Magn. Mater. 400, 107–111 (2015)arXiv


Development of the digital storage Fuon

H. Ostad-Ahmad-Ghorabi, T. Schäfer, A. Spielauer, G. Aschinger, and D. Collado-Ruiz

Proceedings of the 19th International Conference on Engineering Design (ICED13), Design for Harmonies, Vol.2: Design Theory and Research Methodology, Seoul, Korea, 19-22.08.2013

 

Theses


Classical and quantum phase transitions in strongly correlated electron systems

PhD Thesis, Supervisors: Prof. Karsten Held and Prof. Alessandro Toschi

TU Wien (2016)


Electronic correlations at the two-particle level

MSc Thesis, Supervisor: Prof. Alessandro Toschi

TU Wien (2013)

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