Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Surface plasmons induce topological transition in graphene/α-MoO3 heterostructures

Journal Article · · Nature Communications
Abstract

Polaritons in hyperbolic van der Waals materials—where principal axes have permittivities of opposite signs—are light-matter modes with unique properties and promising applications. Isofrequency contours of hyperbolic polaritons may undergo topological transitions from open hyperbolas to closed ellipse-like curves, prompting an abrupt change in physical properties. Electronically-tunable topological transitions are especially desirable for future integrated technologies but have yet to be demonstrated. In this work, we present a doping-induced topological transition effected by plasmon-phonon hybridization in graphene/α-MoO 3 heterostructures. Scanning near-field optical microscopy was used to image hybrid polaritons in graphene/α-MoO 3 . We demonstrate the topological transition and characterize hybrid modes, which can be tuned from surface waves to bulk waveguide modes, traversing an exceptional point arising from the anisotropic plasmon-phonon coupling. Graphene/α-MoO 3 heterostructures offer the possibility to explore dynamical topological transitions and directional coupling that could inspire new nanophotonic and quantum devices.

Research Organization:
Columbia Univ., New York, NY (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019443
OSTI ID:
1874067
Alternate ID(s):
OSTI ID: 1904326
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 13; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (35)

Phonon Polaritons in Twisted Double-Layers of Hyperbolic van der Waals Crystals journal June 2020
Twisted Nano-Optics: Manipulating Light at the Nanoscale with Twisted Phonon Polaritonic Slabs journal June 2020
Charge-Transfer Plasmon Polaritons at Graphene/α-RuCl 3 Interfaces journal November 2020
Hybridized Hyperbolic Surface Phonon Polaritons at α-MoO 3 and Polar Dielectric Interfaces journal March 2021
Tailoring Topological Transitions of Anisotropic Polaritons by Interface Engineering in Biaxial Crystals journal April 2022
Mechanical Detection and Imaging of Hyperbolic Phonon Polaritons in Hexagonal Boron Nitride journal September 2017
Accessing the Exceptional Points in a Graphene Plasmon–Vibrational Mode Coupled System journal October 2021
Active Tuning of Highly Anisotropic Phonon Polaritons in Van der Waals Crystal Slabs by Gated Graphene journal January 2022
Self-Limiting Layer-by-Layer Oxidation of Atomically Thin WSe 2 journal February 2015
Gate-tuning of graphene plasmons revealed by infrared nano-imaging journal June 2012
Sub-diffractional volume-confined polaritons in the natural hyperbolic material hexagonal boron nitride journal October 2014
Polaritons in layered two-dimensional materials journal November 2016
Graphene on hexagonal boron nitride as a tunable hyperbolic metamaterial journal June 2015
Hyperbolic metamaterials journal December 2013
Ultrafast optical switching of infrared plasmon polaritons in high-mobility graphene journal March 2016
Lithography-free IR polarization converters via orthogonal in-plane phonons in α-MoO3 flakes journal November 2020
Configurable phonon polaritons in twisted α-MoO3 journal July 2020
In-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystal journal October 2018
Topological polaritons and photonic magic angles in twisted α-MoO3 bilayers journal June 2020
High carrier mobility in graphene doped using a monolayer of tungsten oxyselenide journal October 2021
Polariton waveguide modes in two-dimensional van der Waals crystals: an analytical model and correlative nano-imaging journal January 2021
Pseudoheterodyne detection for background-free near-field spectroscopy journal September 2006
Broadband Purcell effect: Radiative decay engineering with metamaterials journal April 2012
Broadband super-Planckian thermal emission from hyperbolic metamaterials journal September 2012
Dynamical polarization of graphene at finite doping journal December 2006
Strongly adhesive dry transfer technique for van der Waals heterostructure journal September 2020
A mid-infrared biaxial hyperbolic van der Waals crystal journal May 2019
Enabling propagation of anisotropic polaritons along forbidden directions via a topological transition journal April 2021
Far-Field Optical Hyperlens Magnifying Sub-Diffraction-Limited Objects journal March 2007
Optical Negative Refraction in Bulk Metamaterials of Nanowires journal August 2008
Topological Transitions in Metamaterials journal April 2012
Tunable Phonon Polaritons in Atomically Thin van der Waals Crystals of Boron Nitride journal March 2014
Polaritons in van der Waals materials journal October 2016
Polariton panorama journal November 2020
Gate tunable light–matter interaction in natural biaxial hyperbolic van der Waals heterostructures journal April 2022

Similar Records

Magnetically Tunable Polariton Cavities in van der Waals Heterostructures
Journal Article · Mon Jul 21 20:00:00 EDT 2025 · Nano Letters · OSTI ID:2589350

All-angle negative refraction of highly squeezed plasmon and phonon polaritons in graphene–boron nitride heterostructures
Journal Article · Mon Jun 12 20:00:00 EDT 2017 · Proceedings of the National Academy of Sciences of the United States of America · OSTI ID:1465778