3 papers
cond-mat.str-el2026
Dichroic Raman probes for chiral edge modes
Avedis Neehus, Johannes Knolle
The identification and manipulation of charge-neutral fractionalized quasi-particles, in particular chiral edge modes (CEM), is a long-standing quest in physics. Remarkably, the mi…
cond-mat.str-el2025
Projectively implemented altermagnetism in an exactly solvable quantum spin liquid
Avedis Neehus, Achim Rosch, Johannes Knolle +1
Altermagnets are a new class of symmetry-compensated magnets with large spin splittings. Here, we show that the notion of altermagnetism extends beyond the realm of Landau-type ord…
cond-mat.mes-hall2025
Genuine topological Anderson insulator from impurity induced chirality reversal
Avedis Neehus, Frank Pollmann, Johannes Knolle
We investigate a model of Dirac fermions with Haldane type mass impurities which open a global topological gap even in the dilute limit. Surprisingly, we find that the chirality of…