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Displaying 2726 - 2750 of 3362

Measurement of P-Wave Threshold Law Using Evaporatively Cooled Fermionic Atoms

May 1, 1999
Author(s)
B. L. DeMarco, J L. Bohn, J P. Burke, M J. Holland, Deborah S. Jin
We have measured independently both s-wave and p-wave cross-dimensional thermalization rates for ultracold 40K atoms held in a magnetic trap. These measurements reveal that this fermionic isotope has a large positive s-wave triplet scattering length in

Optimizing GMR Spin Valves: The Outlook for Improved Properties

June 1, 1998
Author(s)
William F. Egelhoff Jr., P J. Chen, Cedric J. Powell, D Parks, Robert McMichael, J Judy, D Martien, A. E. Berkowitz, J M. Daughton
The current generation of giant magnetoresistance (GMR) spin valves exhibits performance characteristics which are not quite as good as desired for ultrahigh-density nonvolatile memory applications. This paper addresses the scientific issues underlying the

Atomic-scale Observations of Alloying at the Cr-Fe(001) Interface

January 1, 1996
Author(s)
Angela Davies, Joseph A. Stroscio, Daniel T. Pierce, Robert Celotta
While much progress has been made using epitaxial growth of Fe/Cr/Fe structures to study magnetic exchange coupling, a number of anomalies have arisen in studies of this model system. Using scanning tunneling microscopy and spectroscopy to investigate Cr

MRI Birdcage RF Coil Resonance with Uncertainty and Relative Error Convergence Rates

October 4, 2017
Author(s)
Jeffrey T. Fong, Nathanael A. Heckert, James J. Filliben, Pedro V. Marcal, Robert Rainsberger, Karl F. Stupic, Stephen E. Russek
In a magnetic resonance imaging (MRI) system, it is necessary to excite the nuclei of a patient into coherent precession for imaging. This requires a coupling between the nuclei and a source of radio frequency (RF) power using a transmitter. To receive a

Near Zero Field Magnetoresistance Spectroscopy: A New Tool in Semiconductor Reliability Physics

May 15, 2023
Author(s)
Patrick Lenahan, Elias Frantz, Sean King, Mark Anders, Stephen Moxim, James P Ashton, Kenneth Myers, Michael Flatte, Nicholas Harmon
A relatively simple addition to many widely utilized semiconductor device characterization techniques can allow one to identify much of the atomic scale structure of point defects which play important roles in the electronic properties of the devices under

High-fidelity laser-free universal control of trapped ion qubits

September 8, 2021
Author(s)
Raghavendra Srinivas, Emanuel Knill, Robert Sutherland, Alexander T. Kwiatkowski, Hannah M. Knaack, Scott Glancy, David J. Wineland, Shaun C. Burd, Dietrich Leibfried, Andrew C. Wilson, David T. Allcock, Daniel Slichter
Universal control of multiple qubits—the ability to entangle qubits and to perform arbitrary individual qubit operations—is a fundamental resource for quantum computing, simulation and networking. Qubits realized in trapped atomic ions have shown the

The case for a U(1) p Quantum Spin Liquid Ground State in the Dipole-Octupole Pyrochlore Ce 2 Zr 2 O 7

September 7, 2021
Author(s)
E. Smith, O. Benton, D. Yahne, B. Placke, Jonathan Gaudet, J. Dudemaine, A. Fitterman, J. Beare, A. Wildes, S. Bhattacharya, T. DeLazzer, C.R.C. Buhariwalla, Nicholas Butch, R. Movshovich, J. Garrett, C. Marjerrison, J. Clancy, E. Kermarrec, G. Luke, A. Bianchi, K. A. Ross, B. Gaulin
… Ce3 + pseudospin-1/2 degrees of freedom in the pyrochlore magnet Ce 2 Zr 2 O 7 are known to possess dipole-octupole …

Nonresonant transmission line probe for sensitive interferometric electron spin resonance detection

August 5, 2019
Author(s)
Pragya R. Shrestha, Nandita S. Abhyankar, Mark A. Anders, Kin P. Cheung, Robert M. Gougelet, Jason T. Ryan, Veronika A. Szalai, Jason P. Campbell
Electron spin resonance (ESR) spectroscopy measures paramagnetic free radicals, or electron spins, in a variety of biological, chemical, and physical systems. Detection of diverse paramagnetic species is important in applications ranging from quantum

Magnetotransport in highly enriched 28Si for quantum information processing devices

November 25, 2018
Author(s)
Aruna N. Ramanayaka, Ke Tang, Joseph Hagmann, Hyun S. Kim, Curt A. Richter, Joshua M. Pomeroy
Elimination of unpaired nuclear spins can result in low error rates for quantum computation; therefore, isotopically enriched 28Si is regarded as an ideal environment for quantum information processing devices. Using mass selected ion beam deposition

Large Anomalous Hall Effect in a Half-Heusler Antiferromagnet

December 1, 2016
Author(s)
T. Suzuki, Robin Michael Daub Chisnell, A. Devarakonda, Y.-T. Liu, W. Feng, D. Xiao, Jeffrey W. Lynn, J. G. Checkelsky
The quantum mechanical (Berry) phase of the electronic wavefunction has profound effects on spin-dependent behavior in solids [2,2]. In the context of electronic transport, the Berry phase plays a critical role as a fundamental origin of the anomalous [3,4

Complete Methods Set for Scalable Ion Trap Quanum Information Processing

September 4, 2009
Author(s)
Jonathan Home, David Hanneke, John D. Jost, Jason Amini, Dietrich G. Leibfried, David J. Wineland
Building a quantum information processor capable of outperforming classical devices will require many quantum bits (qubits) and very large numbers of logical operations \cite{05Knill}. A key requirement is the faithful transport of qubits throughout the

Measurement-driven Langevin modeling of superparamagnetic tunnel junctions

July 23, 2024
Author(s)
Liam Pocher, Temitayo Adeyeye, Sidra Gibeault, Philippe Talatchian, Ursula Ebels, Daniel Lathrop, Jabez J. McClelland, Mark Stiles, Advait Madhavan, Matthew Daniels
Superparamagnetic tunnel junctions are important devices for a range of emerging technologies, but most existing compact models capture only their mean switching rates. Capturing qualitatively accurate analog dynamics of these devices will be important as
Displaying 2726 - 2750 of 3362
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