Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Michael Tinkham"'
Autor:
D. S. Crankshaw, S. O. Valenzuela, Nina Markovic, J. Lee, D. Nakada, Michael Tinkham, Kenneth Segall, Terry P. Orlando, Karl K. Berggren, Bhuwan Singh
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 13:1009-1012
We present experiments to characterize a Nb persistent-current qubit as a two-state system. The magnetization signal from the qubit is read-out by a DC-SQUID with near single-shot efficiency. Experiments varying SQUID ramp-rate and temperature sugges
Publikováno v:
Physica C: Superconductivity. 387:44-48
As the diameter of a superconducting wire is decreased to the order of the coherence length or less, the wire is no longer able to sustain the long range phase coherence and a non-zero resistance is measured. Based on the theory for quantum phase sli
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 18:308-311
We have measured the resistive transitions of ∼20 nanowires of superconducting amorphous MoGe with diameters ∼10 nm and lengths from 100 to 1000 nm . The transition width increases with decreasing cross-sectional area (i.e. increasing normal resi
Publikováno v:
Nature. 411:665-669
The behaviour of traditional electronic devices can be understood in terms of the classical diffusive motion of electrons. As the size of a device becomes comparable to the electron coherence length, however, quantum interference between electron wav
Publikováno v:
Physica B: Condensed Matter. 280:420-424
We describe electron-tunneling measurements of the spectrum of discrete energy levels for electrons in metal nanoparticles, for metals with sufficiently strong electron interactions to form superconducting or magnetic states. For aluminum nanoparticl
Autor:
Michael Tinkham
Publikováno v:
Journal of Superconductivity: Incorporating Novel Magnetism. 13:801-804
Recent experimental results are consistent with the prediction that superconductivity is suppressed in aluminum nanoparticles which are so small (∼10 nm diameter) that the electronic energy level spacing exceeds the superconducting energy gap in bu
Publikováno v:
Journal of Low Temperature Physics. 118:271-285
We discuss single-electron tunneling measurements at dilutionrefrigerator temperatures on metallic grains, sufficientlysmall that the quantum levels of the conduction electrons canbe resolved. These measurements directly reveal the energyeigenvalues
Autor:
Michael Tinkham
Publikováno v:
Philosophical Magazine B. 79:1267-1280
This paper provides a review of the status of experimental and theoretical research on metallic auantum dots by tunnel spectroscopy. The level of the presentation is kept as simple as possible, to make the paper accessible to non-specialists. Topics
Autor:
Michael Tinkham, Dragomir Davidovic
Publikováno v:
Physical Review Letters. 83:1644-1647
We have measured the electronic energy spectra of nm-scale Au particles using a new tunneling spectroscopy configuration. The particle diameters ranged from 5nm to 9nm, and at low energies the spectrum is discrete, as expected by the electron-in-a-bo
Publikováno v:
Physical Review B. 60:6137-6145
The presence of spin-orbit scattering within an aluminum nanoparticle affects measurements of the discrete energy levels within the particle by (1) reducing the effective g-factor below the free-electron value of 2, (2) causing avoided crossings as a