0000000000732826

AUTHOR

Nam Kim

showing 2 related works from this author

Fabrication of Nb-based superconducting single electron transistor

2003

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 .

Josephson effectSuperconductivityFabricationMaterials scienceCondensed matter physicsCoulomb blockadeElectrical and Electronic EngineeringJosephson couplingCondensed Matter PhysicsLithographyEnergy (signal processing)Electronic Optical and Magnetic MaterialsVoltagePhysica B: Condensed Matter
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Non-Local Transport in a Multi-Wall Carbon Nanotube

2001

Non-local electric transport phenomena were observed for a multi-wall carbon nanotube. The magnetic field dependence of non-local resistance was out of phase with respect to the conventional four-probe resistance, which could be explained in terms of the Landauer-Buttiker formula. Our observations indicate that the phase coherence length of multi-wall carbon nanotube exceeds the voltage probe length of about 1.1 µm at the measured temperatures.

NanotubeMaterials scienceCondensed matter physicsMagnetoresistanceGeneral Physics and Astronomychemistry.chemical_elementCarbon nanotubeCondensed Matter::Mesoscopic Systems and Quantum Hall EffectNon locallaw.inventionMagnetic fieldCarbon nanotube quantum dotchemistrylawCarbonVoltageJournal of the Physical Society of Japan
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