112 citations · 482 across the 22 of their papers we have counts for
22 papers
Anomalous and Topological Hall Effects in Antiferromagnetic EuSn2As2 Nanostructures
Evgeny I. Maltsev, Nicolas Pérez, Romain Giraud +8
We investigate magnetotransport in exfoliated nanostructures of the candidate magnetic 3D topological insulator . Similar to macroscopic single crystals, t…
Non-Hermitian topological devices with Chern insulators
Kyrylo Ochkan, Michael Wissmann, Louis Veyrat +9
Multi-terminal topological devices are a new generation of electronic devices with quantized properties robust against imperfections. In magnetic topological insulators, dissipatio…
Giant universal conductance fluctuations in the antiferromagnetic topological insulator MnBi2Te4
Michael Wissmann, Joseph Dufouleur, Louis Veyrat +4
Intrinsic magnetic topological insulators can host quantum states with quantized magneto-electric responses, such as the axion and Chern insulators states evidenced in ultra-thin M…
Transport evidence of surface states in magnetic topological insulator MnBi2Te4
Michael Wissmann, Romain Giraud, Börge Mehlhorn +8
Magnetic topological insulators can host chiral 1D edge channels at zero magnetic field, when a magnetic gap opens at the Dirac point in the band structure of 2D topological surfac…
Inducing ferromagnetism by structural engineering in a strongly spin-orbit coupled oxide
Ji Soo Lim, Carmine Autieri, Merit Spring +17
Magnetic materials with strong spin-orbit coupling (SOC) are essential for the advancement of spin-orbitronic devices, as they enable efficient spin-charge conversion, complex magn…
Non-Hermitian topology in the quantum Hall effect of graphene
Burak Özer, Kyrylo Ochkan, Raghav Chaturvedi +12
Quantum Hall phases have recently emerged as a platform to investigate non-Hermitian topology in condensed-matter systems. This platform is particularly interesting due to its tuna…
Dissipationless transport signature of topological nodal lines
Arthur Veyrat, Klaus Koepernik, Louis Veyrat +12
Topological materials, such as topological insulators or semimetals, usually not only reveal the nontrivial properties of their electronic wavefunctions through the appearance of s…
Room temperature Planar Hall effect in nanostructures of trigonal-PtBi2
Arthur Veyrat, Klaus Koepernik, Louis Veyrat +13
Trigonal-PtBi2 has recently garnered significant interest as it exhibits unique superconducting topological surface states due to electron pairing on Fermi arcs connecting bulk Wey…
Exchange Splitting Mechanism of Negative Magnetoresistance in Layered Antiferromagnetic Semimetals
P. D. Grigoriev, N. S. Pavlov, I. A. Nekrasov +7
Layered topologically non-trivial and trivial semimetals with AFM-type ordering of magnetic sublattice are known to exhibit a negative magnetoresistance that is well correlated wit…
Saturation of the anomalous Hall effect at high magnetic fields in altermagnetic RuO2
Teresa Tschirner, Philipp Keßler, Ruben Dario Gonzalez Betancourt +13
Observations of the anomalous Hall effect in RuO and MnTe have demonstrated unconventional time-reversal symmetry breaking in the electronic structure of a recently identified…
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…
Linear colossal magnetoresistance driven by magnetic textures in LaTiO3 thin films on SrTiO3
Teresa Tschirner, Berengar Leikert, Felix Kern +12
Linear magnetoresistance (LMR) is of particular interest for memory, electronics, and sensing applications, especially when it does not saturate over a wide range of magnetic field…
Two-dimensional ferromagnetic extension of a topological insulator
P. Kagerer, C. I. Fornari, S. Buchberger +19
Inducing a magnetic gap at the Dirac point of the topological surface state (TSS) in a 3D topological insulator (TI) is a route to dissipationless charge and spin currents. Ideally…
Crystal Growth, Exfoliation and Magnetic Properties of Quaternary Quasi-Two-Dimensional CuCrPS
Sebastian Selter, Kranthi K. Bestha, Pritam Bhattacharyya +8
We report optimized crystal growth conditions for the quaternary compound CuCrPS by chemical vapor transport. Compositional and structural characterization of the obtained…
Controlling the electronic interface properties of AlO/SrTiO heterostructures
Berengar Leikert, Judith Gabel, Matthias Schmitt +6
Depositing disordered Al on top of SrTiO is a cheap and easy way to create a two-dimensional electron system in the SrTiO surface layers. To facilitate future device applic…
Helical quantum Hall phase in graphene on SrTiO
Louis Veyrat, Corentin Déprez, Alexis Coissard +8
The ground state of charge neutral graphene under perpendicular magnetic field was predicted to be a quantum Hall topological insulator with a ferromagnetic order and spin-filtered…
Low Magnetic Field Regime of a Gate-Defined Constriction in High-Mobility Graphene
Louis Veyrat, Anna Jordan, Katrin Zimmermann +5
We report on the evolution of the coherent electronic transport through a gate-defined constriction in a high-mobility graphene device from ballistic transport to quantum Hall regi…
Enhanced transport length of spin-helical Dirac fermions in disordered 3D topological insulators
J. Dufouleur, L. Veyrat, B. Dassonneville +7
The transport length and the mean free path are experimentally determined for bulk and surface states in a BiSe nanoribbon by quantum transpo…
Spatial competition of the ground states in 1111 iron pnictides
G. Lang, L. Veyrat, U. Graefe +5
Using nuclear quadrupole resonance, the phase diagram of 1111 FeAsOF (La, Ce, Sm) iron pnictides is constructed as a function of the local charge distribution…
Band bending inversion in BiSe nanostructures
Louis Veyrat, Fabrice Iacovella, Joseph Dufouleur +8
Shubnikov-de-Haas oscillations were studied under high magnetic field in BiSe nanostructures grown by Chemical Vapor Transport, for different bulk carrier densities ranging…
Quasi-ballistic transport of Dirac fermions in a Bi2Se3 nanowire
J. Dufouleur, L. Veyrat, A. Teichgraeber +9
Quantum coherent transport of Dirac fermions in a mesoscopic nanowire of the 3D topological insulator Bi2Se3 is studied in the weak-disorder limit. At very low temperatures, many h…
Structural and electronic phase diagrams of CeFeAsO1-xFx and SmFeAsO1-xFx
Hemke Maeter, Jorge Enrique Hamann Borrero, Til Goltz +17
We have studied the structural and electronic phase diagrams of CeFeAsO1-xFx and SmFeAsO1-xFx by a detailed analysis of muon spin relaxation experiments, synchrotron X-ray diffract…