0000000000264159

AUTHOR

Markus Aapro

showing 2 related works from this author

Visualization of Moiré Magnons in Monolayer Ferromagnet

2023

| openaire: EC/H2020/788185/EU//E-DESIGN Two-dimensional magnetic materials provide an ideal platform to explore collective many-body excitations associated with spin fluctuations. In particular, it should be feasible to explore, manipulate, and ultimately design magnonic excitations in two-dimensional van der Waals magnets in a controllable way. Here we demonstrate the emergence of moiré magnon excitations, stemming from the interplay of spin-excitations in monolayer CrBr3 and the moiré pattern arising from the lattice mismatch with the underlying substrate. The existence of moiré magnons is further confirmed via inelastic quasiparticle interference, showing the appearance of a dispersion …

monolayer chromium tribromideCondensed Matter - Materials Sciencemagneettiset ominaisuudetCondensed Matter - Mesoscale and Nanoscale PhysicsStrongly Correlated Electrons (cond-mat.str-el)moiré modulationscanning tunneling microscopy and spectroscopyMechanical EngineeringspektroskopiaMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesBioengineeringGeneral ChemistrymikroskopiaCondensed Matter PhysicsCondensed Matter - Strongly Correlated ElectronsMesoscale and Nanoscale Physics (cond-mat.mes-hall)two-dimensional ferromagnetGeneral Materials Sciencemagnon
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Moir\'e-enabled topological superconductivity

2020

The search for artificial topological superconductivity has been limited by the stringent conditions required for its emergence. As exemplified by the recent discoveries of various correlated electronic states in twisted van der Waals materials, moir\'e patterns can act as a powerful knob to create artificial electronic structures. Here, we demonstrate that a moir\'e pattern between a van der Waals superconductor and a monolayer ferromagnet creates a periodic potential modulation that enables the realization of a topological superconducting state that would not be accessible in the absence of the moir\'e. The magnetic moir\'e pattern gives rise to Yu-Shiba-Rusinov minibands and periodic mod…

LettersuprajohtavuusCondensed Matter - Mesoscale and Nanoscale PhysicsMechanical EngineeringCondensed Matter - Superconductivitytopological superconductorBioengineering02 engineering and technologyGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics2D ferromagnet01 natural sciencessuprajohteetnanorakenteetCondensed Matter::Superconductivity0103 physical sciencesscanning tunneling microscopyGeneral Materials Science010306 general physics0210 nano-technologymoiré pattern
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