Super-Planckian electron cooling in a van der Waals stack
arXiv:1608.01516 · doi:10.1103/PhysRevLett.118.126804
Abstract
Radiative heat transfer (RHT) between macroscopic bodies at separations that are much smaller than the thermal wavelength is ruled by evanescent electromagnetic modes and can be orders of magnitude more efficient than its far-field counterpart, which is described by the Stefan-Boltzmann law. In this Letter we present a microscopic theory of RHT in van der Waals stacks comprising graphene and a natural hyperbolic material, i.e. hexagonal boron nitride (hBN). We demonstrate that RHT between hot carriers in graphene and hyperbolic phonon-polaritons in hBN is extremely efficient at room temperature, leading to picosecond time scales for the carrier cooling dynamics.
7 pages, 4 multi-panel figures
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Cited by in corpus (25)
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- Hot carriers in graphene -- fundamentals and applications
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- Magic-angle bilayer graphene nano-calorimeters -- towards broadband, energy-resolving single photon detection
- Graphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air
- Electron cooling in graphene enhanced by plasmon-hydron resonance
- Energy dissipation in van der Waals two-dimensional devices
- Plasmon-enhanced graphene photodetector with CMOS-compatible titanium nitride
- Ultrafast evanescent heat transfer across solid interfaces via hyperbolic phonon polaritons in hexagonal boron nitride
- Ultralow-noise terahertz detection by p-n junctions in gapped bilayer graphene
- Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
- Capacitor physics in ultra-near-field heat transfer
- Tunable Ultrafast Thermal Relaxation in Graphene Measured by Continuous-Wave Photomixing
- Hyperbolic Phonon Polariton Electroluminescence as an Electronic Cooling Pathway
- Electroluminescence and Energy Transfer Mediated by Hyperbolic Polaritons
- Plasmonic Tuning of the Near Field Heat Transfer in Double Layer Graphene
- High-Performance All-Optical Modulator Based on Graphene-hBN Heterostructures
- Fluctuation-driven thermal transport in graphene double-layers at charge neutrality
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