345 citations · 3.3k across the 82 of their papers we have counts for
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Altermagnetic anomalous Hall effect emerging from electronic correlations
Toshihiro Sato, Sonia Haddad, Ion Cosma Fulga +2
While altermagnetic materials are characterized by a vanishing net magnetic moment, their symmetry in principle allows for the existence of an anomalous Hall effect (AHE). Here we…
Two-point spectroscopy of Fibonacci topoelectrical circuits
Selma Franca, Torsten Seidemann, Fabian Hassler +2
Topoelectrical circuits are meta-material realizations of topological features of condensed matter systems. In this work, we discuss experimental methods that allow a fast and stra…
Floquet-Anderson localization in the Thouless pump and how to avoid it
András Grabarits, Attila Takács, Ion Cosma Fulga +1
We investigate numerically how onsite disorder affects conduction in the periodically driven Rice-Mele model, a prototypical realization of the Thouless pump. Although the pump is…
Non-Hermitian topological ohmmeter
Viktor Könye, Kyrylo Ochkan, Anastasiia Chyzhykova +4
Measuring large electrical resistances forms an essential part of common applications such as insulation testing, but suffers from a fundamental problem: the larger the resistance,…
Lack of near-sightedness principle in non-Hermitian systems
Helene Spring, Viktor Könye, Anton R. Akhmerov +1
The non-Hermitian skin effect is a phenomenon in which an extensive number of states accumulates at the boundaries of a system. It has been associated to nontrivial topology, with…
Observation of non-Hermitian topology in a multi-terminal quantum Hall device
Kyrylo Ochkan, Raghav Chaturvedi, Viktor Könye +10
Quantum devices characterized by non-Hermitian topology are predicted to show highly robust and potentially useful properties, but realizing them has remained a daunting experiment…
Geometry-independent tight-binding method for massless Dirac fermions in two dimensions
Alexander Ziesen, Ion Cosma Fulga, Fabian Hassler
The Nielsen-Ninomiya theorem, dubbed `fermion-doubling', poses a problem for the naive discretization of a single (massless) Dirac cone on a two-dimensional surface. The inevitable…
Phase transitions of wave packet dynamics in disordered non-Hermitian systems
Helene Spring, Viktor Könye, Fabian A. Gerritsma +2
Disorder can localize the eigenstates of one-dimensional non-Hermitian systems, leading to an Anderson transition with a critical exponent of 1. We show that, due to the lack of en…