Angle-resolved photoemission studies of quantum materials
The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …
concepts such as symmetry and topology that have transformed our understanding of matter …
Iron pnictides and chalcogenides: a new paradigm for superconductivity
Superconductivity is a remarkably widespread phenomenon that is observed in most metals
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …
Magnetism and charge density wave order in kagome FeGe
Electron correlations often lead to emergent orders in quantum materials, and one example
is the kagome lattice materials where topological states exist in the presence of strong …
is the kagome lattice materials where topological states exist in the presence of strong …
Quantum phases driven by strong correlations
It has long been thought that strongly correlated systems are adiabatically connected to their
non-interacting counterpart. Recent developments have highlighted the fallacy of this …
non-interacting counterpart. Recent developments have highlighted the fallacy of this …
On the remarkable superconductivity of FeSe and its close cousins
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 …
of condensed matter physics for more than a decade. Much has been learned about the …
Flat bands, strange metals and the Kondo effect
Flat-band materials such as the kagome metals or moiré superlattices are of intense current
interest. Flat bands can result from the electron motion on numerous (special) lattices and …
interest. Flat bands can result from the electron motion on numerous (special) lattices and …
Spintronics meets orbitronics: Emergence of orbital angular momentum in solids
One of the ultimate goals of spintronics is to realize an efficient electrical manipulation of
spin for high-speed and low-power nanodevices. A core ingredient for achieving this goal is …
spin for high-speed and low-power nanodevices. A core ingredient for achieving this goal is …
Nematic energy scale and the missing electron pocket in FeSe
Superconductivity emerges in proximity to a nematic phase in most iron-based
superconductors. It is therefore important to understand the impact of nematicity on the …
superconductors. It is therefore important to understand the impact of nematicity on the …
Correlation-driven electronic reconstruction in FeTe1−xSex
Electronic correlation is of fundamental importance to high temperature superconductivity.
While the low energy electronic states in cuprates are dominantly affected by correlation …
While the low energy electronic states in cuprates are dominantly affected by correlation …
Imaging orbital-selective quasiparticles in the Hund's metal state of FeSe
Strong electronic correlations, emerging from the parent Mott insulator phase, are key to
copper-based high-temperature superconductivity. By contrast, the parent phase of an iron …
copper-based high-temperature superconductivity. By contrast, the parent phase of an iron …