98 citations · 143 across the 25 of their papers we have counts for
9 papers · 1 filter
Probing Local Topology in a Disordered Higher-Order Topological Insulator
Johannes Düreth, Simon Widmann, Philipp Gagel +13
Higher-order topology is prized for its ability to realize lower-dimensional boundary states which are stable beyond fine-tuning. However, disorder presents a failure mechanism tha…
Continuum theory for topological phase transitions in exciton systems
Xiaochan Cai, Armando Consiglio, Domenico Di Sante +2
An effective continuum theory is constructed for the topological phase transition of excitons in quasi-two-dimensional systems. These topological excitons crucially determine the o…
Quantum spin Hall effect in III-V semiconductors at elevated temperatures: advancing topological electronics
Manuel Meyer, Jonas Baumbach, Sergey Krishtopenko +13
The quantum spin Hall effect (QSHE), a hallmark of topological insulators, enables dissipationless, spin-polarized edge transport and has been predicted in various two-dimensional…
Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
Sourin Chatterjee, Atanu Maity, Janik Potten +7
Geometrical frustration in quantum magnets provides a fertile setting for unconventional phases of matter, including quantum spin liquids (QSLs). The trellis lattice, with its comp…
Unveiling the Self-Orthogonality at Exceptional Points in Driven -Symmetric Systems
Alexander Fritzsche, Riccardo Sorbello, Ronny Thomale +1
We explore the effect of self-orthogonality at exceptional points (EPs) in non-Hermitian Parity-Time-symmetric systems. Using a driven three-band lattice model, we show that the Ra…
Artificial Gauge Fields and Dimensions in a Polariton Hofstadter Ladder
Simon Widmann, Jonas Bellmann, Johannes Düreth +11
Artificial gauge fields allow uncharged particles to mimic the behavior of charged particles subjected to magnetic fields, providing a powerful platform for exploring topological p…
Plasmonic Su-Schrieffer-Heeger chains with strong coupling amplitudes
Benedikt Schurr, Matthias Hensen, Luisa Brenneis +6
Plasmonic many-particle systems with precisely tuned resonances and coupling strengths can exhibit emergent collective properties governed by universal principles. In one-dimension…
Keldysh pseudo-fermion functional renormalization group for quantum magnetism
Janik Potten, Yasir Iqbal, Ronny Thomale +1
The functional renormalization group (FRG) approach for spin models relying on a pseudo-fermionic description has proven to be a powerful technique in simulating ground state prope…
Evidence for a Dirac spin liquid in the generalized Shastry-Sutherland model
Atanu Maity, Francesco Ferrari, Sylvain Capponi +8
We present a multimethod investigation of the recently reported quantum spin liquid (QSL) phase in the spin-1/2 Heisenberg antiferromagnet on the Shastry-Sutherland lattice. A comp…