Zobrazeno 1 - 10
of 313
pro vyhledávání: '"Sauls, J A"'
Autor:
Gluscevich, Noble, Sauls, J. A.
In equilibrium, confined films of superfluid $^3$He-A have the chiral axis, $\hat{\ell}$, locked normal to the surface of the film. There are two degenerate ground states $\hat{\ell}\;||\pm\hat{z}$. However, for a temperature quench, i.e. cool down t
Externí odkaz:
http://arxiv.org/abs/2412.03544
The structure of the order parameter and the excitation spectrum are investigated for isolated impurities in d-wave superconductors. Atomic scale impurities, or defects, scatter quasiparticles and lead to local suppression (pair-breaking) near the im
Externí odkaz:
http://arxiv.org/abs/2410.17461
We use density functional methods to identify the atomic configurations of H and D atoms trapped by O impurities and embedded in bulk Nb. We calculate the double-well potential for O-H and O-D impurities, wave functions, and tunnel splittings for H a
Externí odkaz:
http://arxiv.org/abs/2409.09014
Autor:
Ueki, Hikaru, Sauls, J. A.
Publikováno v:
Prog. Theor. Exp. Phys. 2024 (27 pages)
High-Q superconducting resonators have been proposed and developed as detectors of light-by-light scattering mediated by the hypothesized axion or virtual electron-positron pairs in quantum electrodynamics - the Euler-Heisenberg (EH) interaction. Pho
Externí odkaz:
http://arxiv.org/abs/2408.08275
Publikováno v:
Published in the NATO ASI series on "The Vortex State'' (1994)
These lectures present the Fermi-liquid theory of superconductivity, which is applicable to a broad range of systems that are candidates for non-s wave pairing, {\it e.g.} the heavy fermions, organic metals and the CuO superconductors. Ginzburg-Landa
Externí odkaz:
http://arxiv.org/abs/2408.04151
Autor:
Sauls, J. A.
Publikováno v:
Published in "Strongly Correlated Electronic Materials - The Los Alamos Symposium 1993'', K. Bedell, Z. Wang, D. Meltzer, A. Balatsky and E. Abrahams, eds., Addison-Wesley Publishing Co., New York (1994). ISBN 0-2-1-40930-5
Fermi liquid theory is used to generate the Ginzburg-Landau free energy functionals for unconventional superconductors belonging to various representations. The parameters defining the GL functional depend on Fermi surface anisotropy, impurity scatte
Externí odkaz:
http://arxiv.org/abs/2406.05230
Autor:
Hindmarsh, Mark, Sauls, J. A., Zhang, Kuang, Autti, S., Haley, Richard P., Heikkinen, Petri J., Huber, Stephan J., Levitin, Lev V., Lopez-Eiguren, Asier, Mayer, Adam J., Rummukainen, Kari, Saunders, John, Zmeev, Dmitry
Publikováno v:
Journal of Low Temperature Physics, 215, 495-524 (2024)
First order phase transitions in the very early universe are a prediction of many extensions of the Standard Model of particle physics and could provide the departure from equilibrium needed for a dynamical explanation of the baryon asymmetry of the
Externí odkaz:
http://arxiv.org/abs/2401.07878
Publikováno v:
Frontiers in Superconducting Materials, 3:1--7 (2023)
We present results for the resonant frequency shift and quality factor of disordered Nb SRF cavities driven out of equilibrium by the resonant microwave field. The theory is based on the nonequilibrium theory of superconductivity for the current resp
Externí odkaz:
http://arxiv.org/abs/2307.07905
Autor:
Sauls, J. A.
Publikováno v:
Journal of Low Temperature Physics, 213:42-50 (2023)
The thermodynamic potential for superfluid $^3$He-B embedded in a homogeneously distributed random potential is calculated from a quasiclassical reduction of the Luttinger-Ward functional to leading order in $k_{\mbox{$\tiny B$}} T_c/E_f$. The result
Externí odkaz:
http://arxiv.org/abs/2212.01726
Publikováno v:
JPS Conf. Proc., 38:011068, 2023
Recently reported anomalies in frequency shift of order $\delta f\sim 0.1 -10\,\mbox{kHz}$ for Niobium SRF cavities in a narrow temperature region near $T_c\simeq 9\,\mbox{K}$ are sensitive to the surface preparation and Nitrogen doping. We developed
Externí odkaz:
http://arxiv.org/abs/2209.11752