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Generation of current vortex by spin current in Rashba systems
Florian Lange, Satoshi Ejima, Junji Fujimoto +4
Employing unbiased large-scale time-dependent density-matrix renormalization-group simulations, we demonstrate the generation of a charge-current vortex via spin injection in the R…
Controlling the direction of topological transport in a non-Hermitian time-reversal symmetric Floquet ladder
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
We propose a one-dimensional Floquet ladder that possesses two distinct topological transport channels with opposite directionality. The transport channels occur due to a $\mathbb…
Electronic Properties of Quantum Dots in Magnetic Fields
Alexander Filusch, Holger Fehske
We address the electronic properties of quantum dots in the two-dimensional lattice when subjected to a perpendicular magnetic field. Implementing an infinite mas…
Real and imaginary edge states in stacked Floquet honeycomb lattices
Alexander Fritzsche, Bastian Höckendorf, Andreas Alvermann +1
We present a non-Hermitian Floquet model with topological edge states in real and imaginary band gaps. The model utilizes two stacked honeycomb lattices which can be related via fo…
Photoinduced -pairing at finite temperatures
Satoshi Ejima, Tatsuya Kaneko, Florian Lange +2
We numerically prove photoinduced -pairing in a half-filled fermionic Hubbard chain at both zero and finite temperature. The result, obtained by combining the matrix-product-sta…
Cutting off the non-Hermitian boundary from an anomalous Floquet topological insulator
Bastian Höckendorf, Andreas Alvermann, Holger Fehske
In two-dimensional anomalous Floquet insulators, non-Hermitian boundary state engineering can be used to completely separate chiral boundary states from bulk bands in the quasiener…