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RESEARCH PRODUCT
Fabrication of Nb-based superconducting single electron transistor
Sorin ParaoanuKlavs HansenNam KimJukka P. Pekolasubject
Josephson effectSuperconductivityFabricationMaterials scienceCondensed matter physicsCoulomb blockadeElectrical and Electronic EngineeringJosephson couplingCondensed Matter PhysicsLithographyEnergy (signal processing)Electronic Optical and Magnetic MaterialsVoltagedescription
Abstract We have fabricated Nb/(Al-)AlOx/Nb junctions with a single electron transistor (SET) geometry using conventional e-beam lithographic technique. It was possible to reach a clearly defined superconducting gap of 0.75 meV as measured in the current vs. voltage (I–V) characteristic curve, which corresponds to Tc of 4.6 K . The Josephson coupling energy was comparable to the charging energy, EJ≈Ec=30– 40 μeV .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-05-01 | Physica B: Condensed Matter |