# Allgemein

## New Preprint: Unconventional crystal structure of the high-pressure superconductor La3Ni2O7

Pascal Puphal, Pascal Reiss, Niklas Enderlein, Yu-Mi Wu, Giniyat Khaliullin, Vignesh Sundaramurthy, Tim Priessnitz, Manuel Knauft, Lea Richter, Masahiko Isobe, Peter A. van Aken, Hidenori Takagi, Bernhard Keimer, Y. Eren Suyolcu, Björn Wehinger, Philipp Hansmann, Matthias Hepting The discovery of h...

## New Nature Comm. article: Mott insulators with boundary zeros

Niklas Wagner, Lorenzo Crippa, Adriano Amaricci, Philipp Hansmann, Marcel Klett, Elio König, Thomas Schäfer, Domenico Di Sante, Jennifer Cano, Andrew Millis, Antoine Georges, Giorgio Sangiovanni The topological classification of electronic band structures is based on symmetry properties of ...

## New Preprint: Single- and two-particle observables in the Emery model: a dynamical mean-field perspective

Yi-Ting Tseng, M. O. Malcolms, Henri Menke, Marcel Klett, Thomas Schäfer, and P. Hansmann We compare the dynamical mean-field descriptions of the single-band Hubbard model and the three-band Emery model at the one- and two-particle level for parameters relevant to high-Tc superconductors. We show...

## New work in Nature Communications: “Distinct spin and orbital dynamics in Sr2RuO4”

The unconventional superconductor Sr2RuO4 has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic excitations as potential mediators of Cooper pairing. We...

## Predicted chiral d-wave superconductivity found in ad-atom systems!

In 2018 we predicted chiral d-wave superconductivity in hole-doped X:Si(111) (X=Sn,Pb) ad-atom systems (see Figure). Now - 5 years later - experimentalists confirm our prediction in boron doped Sn:Si(111) in a Nature physics article.

## New PRB “Inter-orbital singlet pairing in Sr2RuO4: a Hund’s superconductor”

Stefan Käser, et al. We study the superconducting gap function of Sr2RuO4. By solving the linearized Eliashberg equation with a correlated pairing vertex extracted from a dynamical mean-field calculation we identify the dominant pairing channels. An analysis of the candidate gap functions in orbita...

## CNQM2021 talks are online

The talks of the 2021 workshop at the FKF-MPG in Stuttgart are now online and available via YouTube!

## Quantum Showdown: Competing Methods of Solving Quantum Systems Put to the Test

A many-method study of the Hubbard model demonstrates how the field of computational quantum physics is evolving to be more collaborative.

## Tree Tensor-Network Real-Time Multiorbital Impurity Solver: Spin-Orbit Coupling and Correlation Functions in Sr2RuO4

X. Cao, Y. Lu, P. Hansmann, M. W. Haverkort We present a tree tensor-network impurity solver suited for general multiorbital systems. The network is constructed to efficiently capture the entanglement structure and symmetry of an impurity problem. The solver works directly on the real-time/frequenc...

## Mott insulating states with competing orders in the triangular lattice Hubbard model

Alexander Wietek, Riccardo Rossi, Fedor Šimkovic IV, Marcel Klett, Philipp Hansmann, Michel Ferrero, E. Miles Stoudenmire, Thomas Schäfer, Antoine Georges The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermod...