Zobrazeno 1 - 10
of 2 245
pro vyhledávání: '"Mortensen, N"'
In this paper we study the topology of the bands of a plasmonic crystal composed of graphene and of a metallic grating. Firstly, we derive a Kronig-Penney type of equation for the plasmonic bands as function of the Bloch wavevector and discuss the pr
Externí odkaz:
http://arxiv.org/abs/2404.19576
Autor:
Jang, Minsoo, Menabde, Sergey G., Kiani, Fatemeh, Heiden, Jacob T., Zenin, Vladimir A., Mortensen, N. Asger, Tagliabue, Giulia, Jang, Min Seok
Publikováno v:
Phys. Rev. Applied 22, 014076 (2024)
Scattering-type scanning near-field optical microscope (s-SNOM) has become an essential tool to study polaritons - quasiparticles of light coupled to collective charge oscillations - via direct probing of their near field with a spatial resolution fa
Externí odkaz:
http://arxiv.org/abs/2402.17225
Publikováno v:
ACS Photonics 11, 2379 (2024)
Surface plasmon polaritons (SPPs) carry transverse optical spin within the evanescent field, which has enabled the demonstration of various chiral light-matter interactions in classical and quantum systems. To achieve high spin selectivity in the int
Externí odkaz:
http://arxiv.org/abs/2402.08728
Publikováno v:
ACS Photonics 11, 2368 (2024)
We demonstrate the existence of previously unreported magnetic modes with record-high magnetic Purcell factors in topological-insulator nanospheres. Focusing on bismuth selenide (Bi$_{2}$Se$_{3}$), and based on full electromagnetic Mie theory, we fin
Externí odkaz:
http://arxiv.org/abs/2312.04958
Publikováno v:
ACS Nano 18, 20751 (2024)
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 excitons in the near- and mid-ultraviolet (UV). The imposed potential has
Externí odkaz:
http://arxiv.org/abs/2312.01913
Publikováno v:
Nanophotonics 13, 2513 (2024)
We discuss the possibility of self-hybridisation in high-index dielectric nanoparticles, where Mie modes of electric or magnetic type can couple to the interband transitions of the material, leading to spectral anticrossings. Starting with an idealis
Externí odkaz:
http://arxiv.org/abs/2311.05994
Autor:
Menabde, Sergey G., Heiden, Jacob T., Zenin, Vladimir A., Mortensen, N. Asger, Jang, Min Seok
Publikováno v:
Advanced Optical Materials 12, 2302797 (2024)
Topological insulators generally have dielectric bulk and conductive surface states. Consequently, some of these materials have been shown to support polaritonic modes at visible and THz frequencies. At the same time, the optical properties of topolo
Externí odkaz:
http://arxiv.org/abs/2311.02841
Autor:
Yan, Xiaotian, Tserkezis, Christos, Mortensen, N. Asger, Vandenbosch, Guy A. E., Zheng, Xuezhi
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques 72, 2095 (2024)
Within the framework of the T-matrix method, we present a modeling tool that predicts the optical response from the Nanosphere-on-Mirror (NSoM) construct. The nonclassical effects in metals are accounted for by the nonlocal hydrodynamic Drude model (
Externí odkaz:
http://arxiv.org/abs/2309.08311
Autor:
Stamatopoulou, P. Elli, Zhao, Wenhua, Echarri, Álvaro Rodríguez, Mortensen, N. Asger, Busch, Kurt, Tserkezis, Christos, Wolff, Christian
Publikováno v:
Physical Review Research 6, 013239 (2024)
We present an analytic, Mie theory-based solution for the energy-loss and the photon-emission probabilities in the interaction of spherical nanoparticles with electrons passing nearby and through them, in both cathodoluminescence and electron energy-
Externí odkaz:
http://arxiv.org/abs/2309.00918
Autor:
Morozov, Sergii, Yezekyan, Torgom, Wolff, Christian, Bozhevolnyi, Sergey I., Mortensen, N. Asger
Publikováno v:
npj 2D Materials and Applications 8, 24 (2024)
The lowest energy states in transition metal dichalcogenide (TMD) monolayers follow valley selection rules, which have attracted vast interest due to the possibility of encoding and processing of quantum information. However, these quantum states are
Externí odkaz:
http://arxiv.org/abs/2308.10514