8 papers
Non-Hermitian topology of quantum spin-Hall systems to detect edge-state polarization
Raghav Chaturvedi, Ion Cosma Fulga, Jeroen van den Brink +1
We study the non-Hermitian topology of multi-terminal transport in a quantum spin-Hall device described by the Bernevig-Hughes-Zhang model. We show that breaking time-reversal symm…
Ginzburg-Landau theory for unconventional surface superconductivity in PtBi
Harald Waje, Fabian Jakubczyk, Jeroen van den Brink +1
Recent experimental evidence suggests the presence of an unconventional, nodal surface-su\-per\-con\-duc\-ting state in trigonal PtBi\textsubscript{2}. We construct a Ginzburg--Lan…
Room temperature Planar Hall effect in nanostructures of trigonal-PtBi2
Arthur Veyrat, Klaus Koepernik, Louis Veyrat +13
Trigonal-PtBi2 has recently garnered significant interest as it exhibits unique superconducting topological surface states due to electron pairing on Fermi arcs connecting bulk Wey…
Three prerequisites for high-temperature superconductivity in t-PtBi
Andrii Kuibarov, Susmita Changdar, Riccardo Vocaturo +9
Although the generic mechanism behind high-temperature superconductivity remains notoriously elusive, a set of favorable conditions for its occurrence in a given material has emerg…
Exploring Topological Effects in Thin-Film X-Ray Cavities
Hanns Zimmermann, Jonathan Sturm, Ion Cosma Fulga +2
Quantum control of single x-ray photons can be achieved using thin-film nanostructure cavities with embedded layers of resonant nuclei. Here, we design and theoretically investigat…
Synthetic horizons in an atomic chain: Horizon-induced effects and connections to quantum Hall systems
Ali G. Moghaddam, Viktor Könye, Viktor Könye +3
We investigate the sine model, a one-dimensional tight-binding Hamiltonian with position-dependent sinusoidal hopping, and demonstrate the formation of synthetic horizons where ele…