132 citations · 542 across the 29 of their papers we have counts for
29 papers
Nematic Fluctuations and Electronic Correlations in Heavily Hole-Doped BaKFeAs Probed by Elastoresistance
Franz Eckelt, Steffen Sykora, Xiaochen Hong +6
This work investigates nematic fluctuations and electronic correlations in the hole-doped iron pnictide superconductor BaKFeAs by means of longitudinal and tran…
Absence of hexagonal to square structural transition in LiFeAs vortex matter
Sven Hoffmann, Ronny Schlegel, Christian Salazar +9
We investigated magnetic vortices in two stoichiometric LiFeAs samples by means of scanning tunneling microscopy and spectroscopy. The vortices were revealed by measuring the local…
Elastoresistivity of heavily hole doped 122 iron pnictides superconductors
Xiaochen Hong, Steffen Sykora, Federico Caglieris +8
Nematicity in the heavily hole-doped iron pnictide superconductors remains controversial. Sizeable nematic fluctuations and even nematic orders far from a magnetic instability were…
Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect
Christoph Wuttke, Federico Caglieris, Steffen Sykora +11
The role of nematic fluctuations for unconventional superconductivity has been subject of intense discussions for many years. In iron-based superconductors, the most established pr…
Renormalization approach to the superconducting Kondo model
Steffen Sykora, Tobias Meng
An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the interaction between electrons in a BCS -wave superc…
Generalized diagonalization scheme for many-particle systems
Steffen Sykora, Arnd Hübsch, Klaus W. Becker
Despite the advances in the development of numerical methods analytical approaches still play the key role on the way towards a deeper understanding of many-particle systems. In th…