Landau-phonon polaritons in Dirac heterostructures.

Autor: Wehmeier L; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA., Xu S; Department of Physics, Columbia University, New York, NY 10027, USA., Mayer RA; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Vermilyea B; Department of Physics, University of California, San Diego, La Jolla, CA 92093, USA., Tsuneto M; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Dapolito M; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; Department of Physics, Columbia University, New York, NY 10027, USA., Pu R; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Du Z; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Chen X; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; Department of Physics, Columbia University, New York, NY 10027, USA., Zheng W; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Jing R; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, NY 11973, USA., Zhou Z; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Watanabe K; Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Taniguchi T; Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Gozar A; Department of Physics, Yale University, New Haven, CT 06520, Fairfield University, Department of Physics, Fairfield, CT 06824, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA.; Fairfield University, Department of Physics, Fairfield, CT 06824, USA., Li Q; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, NY 11973, USA., Kuzmenko AB; Department of Quantum Matter Physics, University of Geneva, 1211 Geneva, Switzerland., Carr GL; National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA., Du X; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA., Fogler MM; Department of Physics, University of California, San Diego, La Jolla, CA 92093, USA., Basov DN; Department of Physics, Columbia University, New York, NY 10027, USA., Liu M; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA.; National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2024 Sep 13; Vol. 10 (37), pp. eadp3487. Date of Electronic Publication: 2024 Sep 13.
DOI: 10.1126/sciadv.adp3487
Abstrakt: Polaritons are light-matter quasiparticles that govern the optical response of quantum materials at the nanoscale, enabling on-chip communication and local sensing. Here, we report Landau-phonon polaritons (LPPs) in magnetized charge-neutral graphene encapsulated in hexagonal boron nitride (hBN). These quasiparticles emerge from the interaction of Dirac magnetoexciton modes in graphene with the hyperbolic phonon polariton modes in hBN. Using infrared magneto-nanoscopy, we reveal the ability to completely halt the LPP propagation in real space at quantized magnetic fields, defying the conventional optical selection rules. The LPP-based nanoscopy also tells apart two fundamental many-body phenomena: the Fermi velocity renormalization and field-dependent magnetoexciton binding energies. Our results highlight the potential of magnetically tuned Dirac heterostructures for precise nanoscale control and sensing of light-matter interaction.
Databáze: MEDLINE