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Magnetically Tunable Polariton Cavities in van der Waals Heterostructures

Journal Article · · Nano Letters
 [1];  [2];  [3];  [4];  [2];  [4];  [4];  [4];  [5];  [4];  [6];  [7];  [5];  [5];  [5];  [8];  [9];  [10];  [5];  [5] more »;  [4];  [11];  [12] « less
  1. Stony Brook Univ., NY (United States); Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP (Brazil). Brazilian Synchrotron Light Laboratory (LNLS); Univ. of Campinas (UNICAMP), Sao Paulo (Brazil)
  2. Stony Brook Univ., NY (United States); Columbia Univ., New York, NY (United States)
  3. Stony Brook Univ., NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
  4. Stony Brook Univ., NY (United States)
  5. Columbia Univ., New York, NY (United States)
  6. Stanford Univ., CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  7. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  8. Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP (Brazil). Brazilian Nanotechnology National Laboratory (LNNano); Federal Univ. of Mato Grosso (Brazil)
  9. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford Univ., CA (United States)
  10. Stanford Univ., CA (United States)
  11. Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP (Brazil). Brazilian Synchrotron Light Laboratory (LNLS)
  12. Stony Brook Univ., NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Nanophotonic cavities are the foundation for a broad spectrum of applications, including quantum sensing, on-chip communication, and cavity quantum electrodynamics. In van der Waals (vdW) materials, these cavities can harness polaritons, which are quasiparticles emerging from photon interactions with excitons, plasmons, or phonons that are confined in microscopic sample flakes. Hybrid phonon–plasmon cavities leverage the long lifetimes of phonons and good tunability of plasmons, but their reconfigurability remains fundamentally limited. Here, in this work, we introduce a magnetic-field-tuning mechanism for polaritonic cavities in a vdW heterostructure. Specifically, we demonstrate that the primary Landau transition in magnetized charge-neutral graphene can be harvested for controlling polaritonic cavity modes in a graphene-based phononic heterostructure. Additionally, we predict a magnetic-field-induced topological transition in the polariton isofrequency contour, causing a nontrivial cavity mode profile redistribution. Our study underscores the versatility of Landau-based nanophotonic cavities, offering new paradigms for the design and manipulation of light–matter interactions at the nanoscale.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0019443; SC0012704
OSTI ID:
2589350
Report Number(s):
BNL--228943-2025-JAAM
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 35 Vol. 25; ISSN 1530-6992; ISSN 1530-6984
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (46)

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Infrared nano-imaging of Dirac magnetoexcitons in graphene journal August 2023
Extreme light confinement and control in low-symmetry phonon-polaritonic crystals journal December 2023
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Near-field microscopy by elastic light scattering from a tip
  • Keilmann, Fritz; Hillenbrand, Rainer
  • Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 362, Issue 1817 https://doi.org/10.1098/rsta.2003.1347
journal April 2004
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