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Search Publications

NIST Authors in Bold

Displaying 2126 - 2150 of 3361

Anomalous Hall Effect Emerging from Field-Induced Weyl Nodes in SmAlSi

June 4, 2025
Author(s)
Yuxiang Gao, Shiming Lei, Eleanor Clememts, Yichen Zhang, Xue-Jian Gao, Songxue Chi, Kam Law, Ming Yi, Jeffrey Lynn, Emilia Morosan
The intrinsic anomalous Hall effect (AHE) has been reported in numerous ferromagnetic Weyl semimetals. However, the AHE in the antiferromagnetic (AFM) or paramagnetic (PM) state of Weyl semimetals has rarely been observed experimentally. Different

Ultrafast optically induced spin transfer in ferromagnetic alloys

January 17, 2020
Author(s)
Moritz Hofherr, Soren Hauser, J. K. Dewhurst, Phoebe Tengdin, S Sakshath, Hans Nembach, Tobias Weber, Justin Shaw, Thomas J. Silva, H C. Kapteyn, M Cinchetti, B Rethfeld, M M. Murnane, D Steil, B Stadtmuller, S Sharma, Martin Aeschlimann, S Mathias
The vision of using light to manipulate electronic and spin excitations in materials on their fundamental time and length scales requires new approaches in experiment and theory to observe and understand these excitations. The ultimate speed limit for all

Spin Waves Across Three-Dimensional, Close-Packed Nanoparticles

December 21, 2018
Author(s)
Kathryn Krycka, James Jennings Rhyne, Samuel D Oberdick, Ahmed M. Abdelgawad, Julie A. Borchers, Yumi Ijiri, Sara A. Majetich, Jeffrey W. Lynn
Inelastic neutron scattering is utilized to measure the spin waves, or magnons, which arise from inter-particle coupling between 8.4 nm ferrite nanoparticles that are self-assembled into a close-packed lattice, yet physically separated by oleic acid

Intrinsic Spin Torque Without Spin-Orbit Coupling

December 21, 2015
Author(s)
Kyoung-Whan Kim, Kyung-Jin Lee, Hyun-Woo Lee, Mark D. Stiles
For non-uniform magnetic textures, we derive an intrinsic contribution to the non-adiabatic spin torque that may be the dominant contribution. It differs from previously considered contributions in several ways. It does not depend on the change in

Low carrier density epitaxial graphene devices on SiC

June 1, 2014
Author(s)
Yanfei Yang, Lung-I Huang, Yasuhiro Fukuyama, Fan-Hung Liu, Mariano Real, Paola Barbara, Chi-Te Liang, David B. Newell, Randolph Elmquist
Monolayer epitaxial graphene grown on a hexagonal silicon carbide (SiC) substrate is typically found to be heavily n-doped (10e13 cm-2) and in most devices made with the as-grown epitaxial graphene the quantized Hall resistance plateau with Landau level

Alternative Cooling Technology Options

August 21, 2011
Author(s)
J S. Brown, Piotr A. Domanski
This paper considers the alternative cooling technologies studied by Fisher et al. (1994) and assesses their current potential to compete with or to replace vapor compression refrigeration technology for space cooling and near-room temperature

Synchrotron Ultraviolet Radiation Facility SURF III

March 1, 2002
Author(s)
Uwe Arp, Charles W. Clark, Alex P. Farrell, E Fein, Mitchell L. Furst, Edward W. Hagley
… a second major upgrade was performed. This time the whole magnet system was replaced to improve the calculability and …

SURF III - An Improved Storage Ring for Radiometry

October 1, 2000
Author(s)
Uwe Arp, R Friedman, Mitchell L. Furst, Susan L. Makar, Ping-Shine Shaw
… SURF III is a circular-orbit, weak-focusing (single dipole magnet) storage ring, a feature which is advantageous if the …

A New Regime of Pauli-Spin Blockade

April 7, 2016
Author(s)
Justin K. Perron, Michael D. Stewart, Neil M. Zimmerman
Pauli-spin blockade is a phenomenon that allows for a type of spin to charge conversion often used to probe fundamental physics such as spin relaxation and singlet-triplet coupling. In this paper we theoretically explore Pauli-spin blockade as a function

Neutron Scattering Studies of Spin-Phonon Hybridization and Superconducting Spin-Gaps in the High Temperature Superconductor La 2-x (Sr,Ba) x CuO 4

March 14, 2016
Author(s)
J.J. Wagman, J. P. Carlo, Jonathan Gaudet, G. Van Gastel, D. L. Abernathy, M. B. Stone, G. E. Granroth, A. I. Koleshnikov, A. T. Savici, Y. J. Kim, H. Zhang, D. Ellis, Yang Zhao, L. Clark, A. B. Kallin, E. Mazurek, H. A. Dabkowska, B. D. Gaulin
We present time-of- flight neutron-scattering measurements on single crystals of La 2-x^Ba xCuO 4 (LBCO) with 0 less than or equal to}xless than or equal to} 0:095 and La 2-xSr xCuO 4 (LSCO) with x = 0.08 and 0.11. This range of dopings spans much of the

Watt's Up, Doc? The NIST Watt Experiment and the Future of the Kg

March 21, 2000
Author(s)
J. Schwarz, Ruimin Liu, David B. Newell, Richard L. Steiner, Edwin R. Williams
The Nist Watt Balance is an interesting and beautiful experiment housed in the nonmagnetic building behind the reactor. The underlying physical principles of the experiment are very simple: a current in a magnetic gradient will produce a force that is

Really Cool Molecules

October 16, 2008
Author(s)
Paul S. Julienne
Ultracold molecules have been made by applying a time-dependent magnetic field to a dilute quantum gas of ultracold trapped fermionic atoms. This raises the prospect of creating novel superfluids and molecular Bose-Einstein condensates.

Scanned Squid Microscope with High-speed Electrical Connectivity

January 26, 2026
Author(s)
Ian Haygood, Bochao Xu, John Biesecker, Michael Schneider
We report on a cryogen-free scanned SQUID microscope operating at 4 K, with the capability of up to 40 RF (40 GHz) connections to a device under test. The system utilizes planar gradiometric SQUID loops which are fully shield except for a pair of pickup

Design, modeling, and fabrication of high frequency Oersted lines for electron spin manipulation in silicon based quantum devices

October 25, 2024
Author(s)
Pradeep Namboodiri, Mark-yves Gaunin, Alessandro Restelli, Ranjit Kashid, Xiqiao Wang, Fan Fei, Brian Courts, FNU Utsav, Vijith Kamalon Pulikodan, Jonathan Wyrick, Richard M. Silver
Coherent manipulation of electron spins is one of the central problems of silicon-based quantum computing efforts. Electron spin resonance (ESR) lines, or Oersted lines, allow high frequency RF pulses to induce an electromagnetic field that drives Rabi

Orphan high field superconductivity in non-superconducting uranium ditelluride.

April 20, 2024
Author(s)
Corey Frank, Sylvia Lewin, Gicela Saucedo Salas, Peter Czajka, Ian Hayes, Hyeok Yoon, Tristin Metz, Johnpierre Paglione, John Singleton, Nicholas Butch
Reentrant superconductivity is an uncommon phenomenon in which the destructive effects of magnetic field on superconductivity are mitigated, allowing a zero-resistance state to survive under conditions that would otherwise destroy it. Typically, the
Displaying 2126 - 2150 of 3361
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