6 papers
Experimental signature of transient symmetry breaking in a cavity superconductor
Siyu Duan, Jingbo Wu, Xiaoqing Jia +5
Transient states of matter far from equilibrium may exhibit physical properties beyond those allowed by the equilibrium-state crystalline symmetries. We explore ultrafast and direc…
Antiferromagnetism and spin excitations in a two-dimensional non-Hermitian Hatano-Nelson flux model
Eduard Naichuk, Ilya M. Eremin, Jeroen van den Brink +1
The one-dimensional Hatano-Nelson model with non-reciprocal hoppings is a prominent example of a relatively simple non-Hermitian quantum-mechanical system, which allows to study va…
Low-energy perspective of interacting electrons in the normal state of superconducting bilayer nickelate
Frank Lechermann, Steffen Bötzel, Ilya M. Eremin
Developing a low-energy model is essential for understanding unconventional superconductivity in bilayer nickelate LaNiO. Here, we analyze distinct low-energy scenarios…
Interplay of orbital-selective Mott criticality and flat-band physics in LaNiO
Frank Lechermann, Steffen Bötzel, Ilya M. Eremin
Superconductivity in nickelates apparently takes place in two different Ni oxidation regimes, namely either for infinite-layer-type compounds close to Ni, or for Ruddlesden-P…
Collective quantum phases in frustrated arrays of Josephson junctions
M. V. Fistul, O. Neyenhuys, B. Pernack +3
We study collective quantum phases and quantum phase transitions occurring in frustrated sawtooth arrays of small quantum Josephson junctions. Frustration is introduced through the…
Theory of potential impurity scattering in pressurized superconducting LaNiO
Steffen Bötzel, Frank Lechermann, Takasada Shibauchi +1
Recently discovered high-T superconductivity in pressurized bilayer nickelate LaNiO (La-327) is believed to be driven by the non-phononic repulsive interaction. Dep…