Unidirectional ray polaritons in twisted asymmetric stacks.

Autor: Álvarez-Cuervo J; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Obst M; Institute of Applied Physics, TUD Dresden University of Technology, Dresden, Germany.; Würzburg-Dresden Cluster of Excellence-EXC 2147 (ct.qmat), Dresden, Germany., Dixit S; Vanderbilt University, Nashville, TN, USA., Carini G; Fritz Haber Institute of the Max Planck Society, Berlin, Germany., F Tresguerres-Mata AI; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Lanza C; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Terán-García E; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Álvarez-Pérez G; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain.; Fritz Haber Institute of the Max Planck Society, Berlin, Germany.; Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, Via Barsanti 14, Arnesano, Italy., Álvarez-Tomillo LF; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Diaz-Granados K; Vanderbilt University, Nashville, TN, USA., Kowalski R; Vanderbilt University, Nashville, TN, USA., Senerath AS; Vanderbilt University, Nashville, TN, USA., Mueller NS; Fritz Haber Institute of the Max Planck Society, Berlin, Germany., Herrer L; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain., De Teresa JM; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain., Wasserroth S; Fritz Haber Institute of the Max Planck Society, Berlin, Germany., Klopf JM; Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany., Beechem T; Purdue University and Birck Nanotechnology Center, West Lafayette, IN, USA., Wolf M; Fritz Haber Institute of the Max Planck Society, Berlin, Germany., Eng LM; Institute of Applied Physics, TUD Dresden University of Technology, Dresden, Germany.; Würzburg-Dresden Cluster of Excellence-EXC 2147 (ct.qmat), Dresden, Germany., Folland TG; University of Iowa, Iowa City, IA, USA., Tarazaga Martín-Luengo A; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Martín-Sánchez J; Department of Physics, University of Oviedo, Oviedo, Spain.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain., Kehr SC; Institute of Applied Physics, TUD Dresden University of Technology, Dresden, Germany. susanne.kehr@tu-dresden.de.; Würzburg-Dresden Cluster of Excellence-EXC 2147 (ct.qmat), Dresden, Germany. susanne.kehr@tu-dresden.de., Nikitin AY; Donostia International Physics Center (DIPC), Donostia-San Sebastián, Spain. alexey@dipc.org.; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain. alexey@dipc.org., Caldwell JD; Vanderbilt University, Nashville, TN, USA. josh.caldwell@vanderbilt.edu., Alonso-González P; Department of Physics, University of Oviedo, Oviedo, Spain. pabloalonso@uniovi.es.; Center of Research on Nanomaterials and Nanotechnology (CINN), CSIC-Universidad de Oviedo, El Entrego, Spain. pabloalonso@uniovi.es., Paarmann A; Fritz Haber Institute of the Max Planck Society, Berlin, Germany. alexander.paarmann@fhi-berlin.mpg.de.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Oct 19; Vol. 15 (1), pp. 9042. Date of Electronic Publication: 2024 Oct 19.
DOI: 10.1038/s41467-024-52750-3
Abstrakt: The vast repository of van der Waals (vdW) materials supporting polaritons offers numerous possibilities to tailor electromagnetic waves at the nanoscale. The development of twistoptics-the modulation of the optical properties by twisting stacks of vdW materials-enables directional propagation of phonon polaritons (PhPs) along a single spatial direction, known as canalization. Here we demonstrate a complementary type of directional propagation of polaritons by reporting the visualization of unidirectional ray polaritons (URPs). They arise naturally in twisted hyperbolic stacks with very different thicknesses of their constituents, demonstrated for homostructures of α -MoO 3 and heterostructures of α -MoO 3 and β -Ga 2 O 3 . Importantly, their ray-like propagation, characterized by large momenta and constant phase, is tunable by both the twist angle and the illumination frequency. Apart from their fundamental importance, our findings introduce twisted asymmetric stacks as efficient platforms for nanoscale directional polariton propagation, opening the door for applications in nanoimaging, (bio)-sensing, or polaritonic thermal management.
(© 2024. The Author(s).)
Databáze: MEDLINE
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