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Martien Den Hertog, Médaille de bronze du CNRS 2019

Chercheuse en physique des matériaux, spécialisée dans la microscopie électronique en transmission sur des nano-objets semi-conducteurs, Martien Den Hertog sera récompensée vendredi 29 novembre 2019 à l’occasion de la remise des médailles Talents CNRS. Félicitations !

Félicitations à Olivier Arcizet pour son ERC Consolidator Grant

En permettant la conversion d’une force en un déplacement mesurable, les oscillateurs mécaniques ont depuis toujours joué un rôle central en physique. La suite ici.

Gérard Mourou, Nobel de physique, en visite à Néel !

Mardi 15 octobre 2019, l’Institut Néel a l’honneur de recevoir Gérard Mourou, Nobel de physique 2018, pour une visite du laboratoire de 14h à 15h30. La suite ici.

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Latest publications

Observation of quantum many-body effects due to zero point fluctuations in superconducting circuits

Nature Communications, November 20, 10, 5259 (2019) Pdf

Sound-driven single-electron transfer in a circuit of coupled quantum rails

Nature Communications, 10, 4557 (2019) Pdf

Selected recent publications

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Scientific highlights

Lithium-ion diffusion pathways within new battery-cathode materials

Li-ion batteries form a basic component on which our world of mobile electronics and communication is built. And they are increasingly used in high power applications such as electric vehicles and the storage of electricity from solar and other renewable power sources. In these batteries, the cathode is a lithium-containing compound. During a battery’s charging and discharging, Li+ ions are alternately extracted from and reinserted in the cathode as they move through the electrolyte to the anode and back. The cathode material must sustain wide variations of its Li+ ion content over many cycles. Full text.

Heat transport in the quantum regime has its own limits !

At extremely low temperature, the transport of matter, charge or energy through a very narrow "quasi one-dimensional" channel can be quantized. This has been demonstrated for a long time, for example for a current of electrical charges. Indeed, electrical conductance across a quantum dot takes values that are an integer multiple of the quantum of electrical conductance 2e2 /h, where e is the charge of the electron and h is the Planck constant. We expect to observe the same quantization phenomenon for heat currents, a regime that would no longer follow Fourier’s law, the classical law of heat conduction. As this quantization has been shown clearly for electrons and photons, it remains a mystery for phonons, the quanta of vibration of the crystal lattice. Full text.

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