381 citations · 5.2k across the 138 of their papers we have counts for
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Inter-orbital nematicity and the origin of a single electron Fermi pocket in FeSe
Daniel Steffensen, Andreas Kreisel, P. J. Hirschfeld +1
The electronic structure of the enigmatic iron-based superconductor FeSe has puzzled researchers since spectroscopic probes failed to observe the expected electron pocket at the $Y…
Topological Superconductivity Induced by Magnetic Texture Crystals
Daniel Steffensen, Morten H. Christensen, Brian M. Andersen +1
We present a detailed investigation of the topological phases and Majorana fermion (MF) excitations that arise from the bulk interplay between (un)conventional one/two-band spin-si…
Orbital-dependent self-energy effects and consequences for the superconducting gap structure in multi-orbital correlated electron systems
Kristofer Björnson, Andreas Kreisel, Astrid T. Rømer +1
We perform a theoretical study of the effects of electronic correlations on the superconducting gap structure of multi-band superconductors. In particular, by comparing standard RP…
Singular magnetic anisotropy in the nematic phase of FeSe
R. Zhou, D. D. Scherer, H. Mayaffre +5
FeSe is arguably the simplest, yet the most enigmatic, iron-based superconductor. Its nematic but non-magnetic ground state is unprecedented in this class of materials and stands o…
Trapping Majorana Zero Modes in Vortices of Magnetic Texture Crystals Coupled to Nodal Superconductors
Daniel Steffensen, Brian M. Andersen, Panagiotis Kotetes
We propose a mechanism for opening a full bulk energy gap and inducing vortex Majorana zero modes (MZMs) in nodal superconductors (SCs). We show that this becomes possible by coupl…
Spin-orbit quantum impurity and quantization in a topological magnet
Jia-Xin Yin, Nana Shumiya, Yuxiao Jiang +22
Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and…
On the Remarkable Superconductivity of FeSe and its Close Cousins
Andreas Kreisel, P. J. Hirschfeld, Brian M. Andersen
Emergent electronic phenomena in iron-based superconductors have been at the forefront of condensed matter physics for more than a decade. Much has been learned about the origin an…
Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor
Damianos Chatzopoulos, Doohee Cho, Koen M. Bastiaans +7
By using scanning tunneling microscopy (STM) we find and characterize dispersive, energy-symmetric in-gap states in the iron-based superconductor $\mathrm{FeTe}_{0.55}\mathrm{Se}_{…
Correlation-induced insulating topological phases at charge neutrality in twisted bilayer graphene
Yuan Da Liao, Jian Kang, Clara N. Breiø +5
Twisted bilayer graphene (TBG) provides a unique framework to elucidate the interplay between strong correlations and topological phenomena in two-dimensional systems. The existenc…
Theory of Strain-Induced Magnetic Order and Splitting of and in SrRuO
Astrid T. Rømer, Andreas Kreisel, Marvin A. Müller +3
The internal structure of the superconducting state in SrRuO remains elusive at present, and exhibits evidence for time-reversal symmetry breaking. Recent muon spin relaxat…
Non-local correlations in Iron Pnictides and Chalcogenides
Shinibali Bhattacharyya, Kristofer Björnson, Karim Zantout +6
Deviations of low-energy electronic structure of iron-based superconductors from density functional theory predictions have been parametrized in terms of band- and orbital-dependen…
Spin-orbit quantum impurity in a topological kagome magnet
Jia-Xin Yin, Nana Shumiya, Yuxiao Jiang +22
Quantum states induced by single-atomic-impurities are the current frontier of material and information science. Recently the spin-orbit coupled correlated kagome magnets are emerg…
Fluctuation-driven superconductivity in SrRuO from weak repulsive interactions
Astrid T. Rømer, Brian M. Andersen
We provide results for the leading superconducting instabilities for a model pertaining to SrRuO obtained within spin-fluctuation mediated superconductivity in the very wea…