Thermal shot noise in top-gated single carbon nanotube field effect transistors

Chaste, Julien; Pallecchi, Emiliano; Morfin, Pascal; Fève, Gwendal; Kontos, Takis; Berroir, Jean-Marc; Hakonen, P.; Plaçais, Bernard

doi:10.1063/1.3425889

Cited by 11 publications

(17 citation statements)

References 15 publications

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“…1), S I tends to saturate, especially at negative bias voltages. This is similar to the behavior observed in semiconducting SWNTs [25]. the electronic system via electron-optical phonon coupling, and F is decreased even stronger.…”

Section: Besides the Electronic Heat Conductionsupporting

confidence: 86%

Electron-phonon coupling in single-walled carbon nanotubes determined by shot noise

Virtanen

Andresen

et al. 2010

Applied Physics Letters

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Section: Besides the Electronic Heat Conductionsupporting

confidence: 86%

Electron-phonon coupling in single-walled carbon nanotubes determined by shot noise

Virtanen

Andresen

et al. 2010

Applied Physics Letters

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“…The amplification line, of bandwidth 0.8 GHz, is similar to the one in Ref. [16]. and V g = ±28 V(BN2).…”

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confidence: 70%

Hot Electron Cooling by Acoustic Phonons in Graphene

et al. 2012

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We have investigated the energy loss of hot electrons in metallic graphene by means of GHz noise thermometry at liquid helium temperature. We observe the electronic temperature T ∝ V at low bias in agreement with the heat diffusion to the leads described by the Wiedemann-Franz law. We report on T ∝ √V behavior at high bias, which corresponds to a T(4) dependence of the cooling power. This is the signature of a 2D acoustic phonon cooling mechanism. From a heat equation analysis of the two regimes we extract accurate values of the electron-acoustic phonon coupling constant Σ in monolayer graphene. Our measurements point to an important effect of lattice disorder in the reduction of Σ, not yet considered by theory. Moreover, our study provides a strong and firm support to the rising field of graphene bolometric detectors.

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“…The electron temperature is deduced from radio frequency shot noise measurements, relying on the relation S I = 4k B T e /R between the current noise spectrum S I , the sample resistance R, and T e . Johnson-noise thermometry has proven useful to study carbon nanotubes 11,12 and more recently graphene 4, 13 . In the high-temperature regime T ph ≥ T BG , we find an energy relaxation rate, J SC = A (T 3 e − T 3 ph ), as predicted by the supercollision mechanism 1 , with a prefactor A related to the amount of disorder and the carrier density.…”

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confidence: 99%

Supercollision cooling in undoped graphene

et al. 2012

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Carrier mobility in solids is generally limited by electron-impurity or electron-phonon scattering depending on the most frequently occurring event. Three body collisions between carriers and both phonons and impurities are rare; they are denoted supercollisions (SCs). Elusive in electronic transport they should emerge in relaxation processes as they allow for large energy transfers. As pointed out in Ref. \onlinecite{Song2012PRL}, this is the case in undoped graphene where the small Fermi surface drastically restricts the allowed phonon energy in ordinary collisions. Using electrical heating and sensitive noise thermometry we report on SC-cooling in diffusive monolayer graphene. At low carrier density and high phonon temperature the Joule power $P$ obeys a $P\propto T_e^3$ law as a function of electronic temperature $T_e$. It overrules the linear law expected for ordinary collisions which has recently been observed in resistivity measurements. The cubic law is characteristic of SCs and departs from the $T_e^4$ dependence recently reported for metallic graphene below the Bloch-Gr\"{u}neisen temperature. These supercollisions are important for applications of graphene in bolometry and photo-detection

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Thermal shot noise in top-gated single carbon nanotube field effect transistors

Abstract: Articles you may be interested inComparison of sensitivities of carbon nanotube field-effect transistor biosensors with and without top metal gate J. Appl. Phys.

Cited by 11 publications

References 15 publications

Electron-phonon coupling in single-walled carbon nanotubes determined by shot noise

Electron-phonon coupling in single-walled carbon nanotubes determined by shot noise

Hot Electron Cooling by Acoustic Phonons in Graphene

Supercollision cooling in undoped graphene

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