6 papers
Magnons reveal topology and dynamics of a skyrmion crystal
Raphael Ayache, Nilotpal Chakraborty, Manabendra Kuiri +11
Although individual skyrmions are topologically protected objects, their cooperative crystalline order is fragile, easily disrupted by thermal fluctuations or other external pertur…
Topological fragility and bilinear magnetoelectric resistance in gapless edge states
Cosimo Gorini, Matthieu Bard, Sophie Gueron +2
In time-reversal symmetric systems such as topological and higher-order topological insulators, 1D spin-momentum locked edge and hinge states are theoretically ``perfectly conducti…
Coherent suppression and dephasing-induced reentrance of high harmonics in gapped Dirac materials
Wolfgang Hogger, Alexander Riedel, Debadrito Roy +4
High-harmonic generation in solids by intense laser pulses provides a fascinating platform for studying material properties and ultra-fast electron dynamics, where its coherent cha…
Hearing the shape of a Dirac drum: Dual quantum Hall states on curved surfaces
Ioachim Dusa, Denis Kochan, Maximilian Fürst +2
The geometry of a physical system is intimately related to its spectral properties, a concept colloquially referred to as "hearing the shape of a drum". Three-dimensional topologic…
Anomalous conductance steps in three-dimensional topological insulator HgTe-based quantum point contacts
Elisabeth Richter, Michael Barth, Dmitriy A. Kozlov +8
We explore electrical transport through a point contact in strained HgTe, a three-dimensional topological insulator. In the absence of a magnetic field , there is no quantizatio…
Topological insulator constrictions -- Dirac particles in a magneto-chiral box
Michael Barth, Maximilian Fürst, Raphael Kozlovsky +2
We study magneto-transport through topological insulator nanowires shaped in the form of a constriction, as can be obtained by etching techniques. The magnetic field is coaxial, po…