3 papers
physics.optics2025
Prospects to bypass nonlocal phenomena in metals using phonon-polaritons
Jacob T. Heiden, Eduardo J. C. Dias, Minhyuk Kim +6
Electromagnetic design relies on an accurate understanding of light-matter interactions, yet often overlooks electronic length scales. Under extreme confinement, this omission can…
cond-mat.mes-hall2024
Tunable exciton polaritons in band-gap engineered hexagonal boron nitride
Pedro Ninhos, Christos Tserkezis, N. Asger Mortensen +1
We show that hexagonal boron nitride (hBN), a two-dimensional insulator, when subjected to an external superlattice potential forms a new paradigm for electrostatically tunable exc…
cond-mat.mes-hall2024
Dirac plasmon polaritons and magnetic modes in topological-insulator nanoparticles
Nikolaos Kyvelos, Vassilios Yannopapas, N. Asger Mortensen +1
We demonstrate the existence of previously unreported magnetic modes with record-high magnetic Purcell factors in topological-insulator nanospheres. Focusing on bismuth selenide (B…