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Search Publications

NIST Authors in Bold

Displaying 1201 - 1225 of 3361

Magnetic Tunnel Junctions with Self-Assembled Molecules

February 5, 2009
Author(s)
Wenyong Wang, Curt A. Richter
… technological points of view. In this work, such molecular magnetic tunnel junctions are fabricated and inelastic … Magnetic Tunnel Junctions with Self-Assembled Molecules …

Universal Scaling of Ballistic Magnetoresistance in Magnetic Nanocontacts

December 1, 2002
Author(s)
S Chung, M Munoz, N Garcia, William F. Egelhoff Jr., Romel Gomez
… with a theory that takes into account the scattering with magnetic domain wall for reversal of the spin between the … Universal Scaling of Ballistic Magnetoresistance in Magnetic Nanocontacts …

Low-field magnetic resonance imaging of roots in intact clayey and silty soils

March 27, 2020
Author(s)
Mark S. Conradi, Stephen A. Altobelli, Dean O. Kuethe, Matthew S. Rosen, Neha Koonjoo, Bo Zhu, Karl Stupic, William L. Rooney, John E. Mullet, Brock Weers, G. Cody Bagnall, Haly Neely, Eiichi Fukushima, Cristine Morgan
… of soils. We describe here a novel technology—low field magnetic resonance imaging (LF-MRI)—for the imaging of energy … morphology and architecture in intact soils. Our use of magnetic fields much weaker than those used in traditional … results in significantly reduced distortion from magnetic material naturally present agricultural soils. A …

NMR and Metabolomics -A Roadmap for the Future

July 23, 2022
Author(s)
Tracey Johnston, David Wishart, Leo Cheng, Valerie Copie, Arthur Edison, Hamid Eghbalnia, Jeffrey Hoch, Goncalo Gouveia, Wimal Pathmasiri, Robert Powers, Llyod Sumner, Mario Uchimiya
… scanners widely available in hospitals.3 Advances in NMR magnet technology are making NMR instruments smaller, … maintain, and more clinically compatible. Advancements in magnet technology is also leading to higher field strengths …

Exchange-Biased Quantum Anomalous Hall Effect

May 19, 2023
Author(s)
Peng Zhang, Purnima P. Balakrishnan, Christopher Eckberg, Peng Deng, Tomohiro Nozaki, Sukong Chong, Patrick Quarterman, Megan Holtz, Brian B. Maranville, Gang Qiu, Lei Pan, Eve Emmanouilidou, Ni Ni, Masashi Sahashi, Alexander Grutter, Kang L. Wang
The quantum anomalous Hall (QAH) effect is characterized by a dissipationless chiral edge state with a quantized Hall resistance at zero magnetic field. Manipulating the QAH state is of great importance in both the understanding of topological quantum

Adiabatic Domain Wall Motion and Landau-Lifshitz Damping

January 1, 2007
Author(s)
Mark D. Stiles, Wayne M. Saslow, Michael J. Donahue, A Zangwill
Recent theory and measurements of the velocity of current-driven domain walls in magnetic nanowires have re-opened the unresolved question of whether Landau-Lifshitz damping or Gilbert damping provides the more natural description of dissipative

High spin-wave propagation length consistent with low damping in a metallic ferromagnet

August 31, 2019
Author(s)
L. Flacke, L. Liensberger, Matthias Althammer, Hans Huebl, Stephan Gepr?ags, Katrin Schultheiss, Aleksandr Buzdakov, T. Hula, H. Schultheiss, Eric R. Edwards, Hans Nembach, Justin Shaw, Rudolf Gross, M. Weiler
We report ultralow intrinsic magnetic damping in Co 25Fe 75 heterostructures, reaching the low 10 -4 regime at room temperature. By using a broadband ferromagnetic resonance technique in out-of-plane geometry, we extracted the dynamic magnetic properties

Suppression of Flux Jumps in Marginally Stable Niobium-Tin Superconductors

March 1, 2001
Author(s)
Ronald B. Goldfarb, Loren F. Goodrich, T Pyon, E. A. Gregory
Niobium-tin superconductor wires with coalesced filaments may have reduced adiabatic stability. Magnetization measurements on such marginally stable conductors exhibit flux jumps, which appear as a sudden decrease in magnetization as the applied field is

Spinon Confinement and a Sharp Longitudinal Mode in Yb 2 Pt 2 Pb in Magnetic Fields

March 8, 2019
Author(s)
W. J. Gannon, I. A. Zaliznyak, L. S. Wu, A. E. Feiguin, A. M. Tsvelik, F. Demmel, Yiming Qiu, John R. Copley, M. S. Kim, M. C. Aronson
… in quantum chromodynamics. We have discovered that modest magnetic fields can tune the relative strengths of the intra- … and a Sharp Longitudinal Mode in Yb 2 Pt 2 Pb in Magnetic Fields …

Suppression of excess noise in transition-edge sensors using magnetic field and geometry

December 17, 2003
Author(s)
Joel N. Ullom, William B. Doriese, Gene C. Hilton, James A. Beall, Steven Deiker, Kent D. Irwin, Carl D. Reintsema, Leila R. Vale, Yizi Xu
… and demonstrate that it can be heavily suppressed by a magnetic field perpendicular to the plane of the sensor. Both … devices at the cost of reduced α. Both the bars and the magnetic field are useful noise reduction techniques for … of excess noise in transition-edge sensors using magnetic field and geometry …

Chiral Microwave Nonreciprocity Demonstrated via Rayleigh and Sezawa Modes Supported in an Al0.58Sc0.42N/4H-SiC PlatformPlatform

March 24, 2025
Author(s)
A. Will-Cole, Xingyu Du, Bin Luo, Valeria Lauter, Alexander Grutter, Lisa Hackett, Michael Miller, Yuanchen Deng, Brandon Smith, Olivia Pitcl, Nian X. Sun, III Olsson, Matt Eichenfield
Chirality plays a crucial role in the helicity mismatch between surface acoustic waves and magnetic spin waves, leading to nonreciprocal transmission of acoustic power for coupled magnetoacoustic modes. Acoustic modes with both longitudinal and shear

Spin Solar Cell Phenomenon on SMM Impacted CoFeB based Magnetic Tunnel Junctions

May 31, 2023
Author(s)
Marzieh Savadkoohi, Pius Suh, Daniel Gopman, Pawan Tyagi
… ferromagnetic electrodes present as the electrodes in a magnetic tunnel junction. For the first time, we demonstrated the solar cell effect on a magnetic tunnel junction where CoFeB was present on both … the MgO tunnel barrier. We produced cross junction shaped magnetic tunnel junction with the exposed edge with the thin …

Dipole Moments of Weak, Electrically Small Emitters from TEM-Cell Measurements

December 1, 1998
Author(s)
David A. Hill, Kenneth H. Cavcey
This report presents a new method for determining the equivalent electric and magnetic dipole moments of an electrically small emitter from TEM-cell measurements. The electric dipole moments are determined from open-circuit measurements, and the magnetic

Parallel MPI image reconstructions in GPU using CUDA

March 19, 2023
Author(s)
Klaus Natorf Quelhas, Mark-Alexander Henn, Ricardo Farias, Weston L. Tew, Solomon I. Woods
This work shows that it is possible to obtain faster MPI image reconstructions by implementing the algorithms in parallel in Graphics Processing Units (GPUs) using NVIDIA's CUDA (Compute Unified Device Architecture). While the parallel Kaczmarz's algorithm
Displaying 1201 - 1225 of 3361
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