6533b855fe1ef96bd12b1b4e
RESEARCH PRODUCT
Response time of a thermometer based on normal metal–insulator–superconductor (NIS) tunnel junctions
Ilari MaasiltaJani KiviojaJukka P. PekolaJ. T. Karvonensubject
SuperconductivityMaterials scienceCondensed matter physicsResponse timeSubstrate (electronics)Atmospheric temperature rangeCondensed Matter PhysicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsTunnel junctionCondensed Matter::SuperconductivityThermometerThermalElectron temperaturedescription
Abstract We have measured the thermal response of a superconductor–normal metal–superconductor (SINIS) tunnel junction structure at substrate temperature ∼60 mK by directly heating the electron system in the normal metal island. In our structure, we find the response time is determined by the electron–phonon coupling in the electron temperature range 300– 600 mK . By using AC heating, the cut-off frequency caused by this response time has been measured, showing that SINIS structures operate as a thermometer up to a few MHz in this temperature range.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-05-01 | Physica E: Low-dimensional Systems and Nanostructures |