Hot Carrier Thermalization and Josephson Inductance Thermometry in a Graphene-based Microwave Circuit
arXiv:2208.13379 · doi:10.1021/acs.nanolett.2c04791
Abstract
Due to its exceptional electronic and thermal properties, graphene is a key material for bolometry, calorimetry, and photon detection. However, despite graphene's relatively simple electronic structure, the physical processes responsible for the transport of heat from the electrons to the lattice are experimentally still elusive. Here, we measure the thermal response of low-disorder graphene encapsulated in hexagonal boron nitride (hBN) by integrating it within a multi-terminal superconducting device coupled to a microwave resonator. This technique allows us to simultaneously apply Joule heat power to the graphene flake while performing calibrated readout of the electron temperature. We probe the thermalization rates of both electrons and holes with high precision and observe a thermalization scaling exponent consistent with cooling dominated by resonant electron-phonon coupling processes occurring at the interface between graphene and superconducting leads. The technique utilized here is applicable for wide range of semiconducting-superconducting interface heterostructures and provides new insights into the thermalization pathways essential for the next-generation thermal detectors.
arXiv commentmain text and supplementary information
References in corpus (22)
- The ORGAN Experiment: An axion haloscope above 15 GHz
- Ballistic Josephson junctions in edge-contacted graphene
- Electron-phonon heat transfer in monolayer and bilayer graphene
- Nanoscale thermal imaging of dissipation in quantum systems
- Quantum coherent control of a hybrid superconducting circuit made with graphene-based van der Waals heterostructures
- Directional Detection of Dark Matter with Two-Dimensional Targets
- Graphene-based Josephson junction microwave bolometer
- Bolometer operating at the threshold for circuit quantum electrodynamics
- Ballistic graphene Josephson junctions from the short to the long regime
- Graphene-based Josephson junction single photon detector
- Imaging resonant dissipation from individual atomic defects in graphene
- Supercurrent Flow in Multi-Terminal Graphene Josephson Junctions
- Ultra-sensitive and Wide Bandwidth Thermal Measurements of Graphene at Low Temperatures
- Electron-phonon mediated heat flow in disordered graphene
- A ballistic graphene superconducting microwave circuit
- Dispersive thermometry with a Josephson junction coupled to a resonator
- Yoctocalorimetry: phonon counting in nanostructures
- Phonon bottleneck in graphene-based Josephson junctions at millikelvin temperatures
- Towards quantum-limited coherent detection of terahertz waves in charge-neutral graphene
- Resonant electron-lattice cooling in graphene
- Thermal Kinetic Inductance Detectors for millimeter-wave detection
- Resonant supercollisions and electron-phonon heat transfer in graphene