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Displaying 39376 - 39400 of 73697

Artifacts that mimic ballistic magnetoresistance

January 1, 2004
Author(s)
William F. Egelhoff Jr., L Gan, Erik B. Svedberg, Cedric J. Powell, Alexander J. Shapiro, Robert McMichael, J Mallett, Thomas P. Moffat, Mark D. Stiles
We have investigated the circumstances underlying recent reports of very large values of ballistic magnetoresistance (BMR) in nanocontacts between magnetic wires. We find that the geometries used are subject to artifacts due to motion of the wires that

Atomic-Resolution Measurements With a New Tunable Diode Laser-Based Interferometer

January 1, 2004
Author(s)
Richard M. Silver, H Zou, S Gonda, Bradley N. Damazo, Jay S. Jun, Carsten P. Jensen, Lowell P. Howard
We have developed a new implementation of a Michelson interferometer which has demonstrated better than 20 picometer resolution measurement capability. This new method uses a tunable diode laser as the light source with the laser wavelength continuously

Ballistic Expansion and Collisions in the Cs Atomic Fountain Clock

January 1, 2004
Author(s)
V Venturi, Eite Tiesinga, Carl J. Williams
We study the effects of the ballistic expansion of an atomic cloud on theoretical predictions of the collisional shifts in the Cesium atomic fountain clock. Due to the strong energy dependence of the collisional shift, we find that the ballistic expansion
Displaying 39376 - 39400 of 73697
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