Hot-Carrier Seebeck Effect: Diffusion and Remote Detection of Hot Carriers in Graphene
arXiv:1506.04575 · doi:10.1021/acs.nanolett.5b00922
Abstract
We investigate hot carrier propagation across graphene using an electrical nonlocal injection/detection method. The device consists of a monolayer graphene flake contacted by multiple metal leads. Using two remote leads for electrical heating, we generate a carrier temperature gradient that results in a measurable thermoelectric voltage VNL across the remaining (detector) leads. Due to the nonlocal character of the measurement, VNL is exclusively due to the Seebeck effect. Remarkably, a departure from the ordinary relationship between Joule power P and VNL, VNL ~ P, becomes readily apparent at low temperatures, representing a fingerprint of hot-carrier dominated thermoelectricity. By studying VNL as a function of bias, we directly determine the carrier temperature and the characteristic cooling length for hot-carrier propagation, which are key parameters for a variety of new applications that rely on hot-carrier transport.
References in corpus (27)
- The electronic properties of graphene
- Thermal Properties of Graphene, Carbon Nanotubes and Nanostructured Carbon Materials
- Hot Carrier-Assisted Intrinsic Photoresponse in Graphene
- Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
- Photo-excitation Cascade and Multiple Carrier Generation in Graphene
- Sensitive Room-Temperature Terahertz Detection via Photothermoelectric Effect in Graphene
- Dual-gated bilayer graphene hot electron bolometer
- Snapshots of non-equilibrium Dirac carrier distributions in graphene
- Hot Carrier Transport and Photocurrent Response in Graphene
- Anomalous thermoelectric transport of Dirac particles in graphene
- Direct view on the ultrafast carrier dynamics in graphene
- Photocurrent measurements of supercollision cooling in graphene
- Disorder-Assisted Electron-Phonon Scattering and Cooling Pathways in Graphene
- Carrier dynamics in epitaxial graphene close to the Dirac point
- Electronic Cooling in Graphene
- The thermopower and Nernst Effect in graphene in a magnetic field
- Electron-phonon heat transfer in monolayer and bilayer graphene
- Electron and optical phonon temperatures in electrically biased graphene
- Supercollision cooling in undoped graphene
- Transport properties of graphene in the high-current limit
- Energy Relaxation of Hot Dirac Fermions in Graphene
- Very Slow Cooling Dynamics of Photoexcited Carriers in Graphene Observed by Optical-Pump Terahertz-Probe Spectroscopy
- Hot electron cooling by acoustic phonons in graphene
- Competing Channels for Hot Electron Cooling in Graphene
- Nonlocal Electronic Spin Detection, Spin Accumulation and the Spin Hall effect
- Magneto-optical conductivity of graphene on polar substrates
- Enhanced spin accumulation at room temperature in graphene spin valves with amorphous carbon interfacial layers
Cited by in corpus (16)
- Van der Waals heterostructures for spintronics and opto-spintronics
- Hot carriers in graphene -- fundamentals and applications
- Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
- Photo Thermal Effect Graphene Detector Featuring 105 Gbit s-1 NRZ and 120 Gbit s-1 PAM4 Direct Detection
- Thermoelectric spin voltage in graphene
- Effects of Dephasing on Spin Lifetime in Ballistic Spin-Orbit Materials
- Spin precession in anisotropic media
- Direct electronic measurement of Peltier cooling and heating in graphene
- Photothermoelectric effects and large photovoltages in plasmonic Au nanowires with nanogaps
- Plasmonic graphene photodetector based on channel photo-thermoelectric effect
- Mis-orientation controlled cross-plane thermoelectricity in twisted bilayer graphene
- Optimizing the photothermoelectric effect in graphene
- Hot Carrier Organic Solar Cells
- Sub-Kelvin Lateral Thermal Transport in Diffusive Graphene
- The heating and cooling of 2D electrons at low temperatures
- Impact of excitation energy on hot carrier properties in InGaAs MQW structure