Zobrazeno 1 - 10
of 2 631
pro vyhledávání: '"Stewart, P. R."'
Several quantum radar concepts have been proposed that exploit the entanglement found in two-mode squeezed vacuum states of the electromagnetic field, the most prominent being radar based on quantum illumination. Classical radars are sometimes requir
Externí odkaz:
http://arxiv.org/abs/2410.08353
Autor:
Sinha, S., Lim, J., Li, Z., Kim, J. S., Hire, A. C., Dee, P. M., Kumar, R. S., Popov, D., Hemley, R. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R., Hamlin, J. J.
The recent surprising discovery of superconductivity with critical temperature $T_c$ = 32 K in MoB$_2$ above 70 GPa has led to the search for related materials that may superconduct at similarly high $T_c$ values and lower pressures. We have studied
Externí odkaz:
http://arxiv.org/abs/2408.17416
Autor:
Lim, J., Sinha, S., Jackson, D. E., Kumar, R. S., Park, C., Hemley, R. J., VanGennep, D., Vohra, Y. K., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R., Hamlin, J. J.
The superconducting and structural properties of elemental strontium metal were investigated under pressures up to 60 GPa while maintaining cryogenic conditions during pressure application. Applying pressure at low temperatures reveals differences in
Externí odkaz:
http://arxiv.org/abs/2408.06128
Autor:
Stewart, Jonathan R.
Local dependence random graph models are a class of block models for network data which allow for dependence among edges under a local dependence assumption defined around the block structure of the network. Since being introduced by Schweinberger an
Externí odkaz:
http://arxiv.org/abs/2404.11464
Autor:
Stewart, Jonathan R.
One of the first steps in applications of statistical network analysis is frequently to produce summary charts of important features of the network. Many of these features take the form of sequences of graph statistics counting the number of realized
Externí odkaz:
http://arxiv.org/abs/2404.11438
Autor:
Geisler, Benjamin, Fanfarillo, Laura, Hamlin, James J., Stewart, Gregory R., Hennig, Richard G., Hirschfeld, P. J.
We explore the optical properties of La3Ni2O7 bilayer nickelates by using density functional theory including a Coulomb repulsion term. Convincing agreement with recent experimental ambient-pressure spectra is achieved for U=3eV, which permits tracin
Externí odkaz:
http://arxiv.org/abs/2401.04258
Autor:
Facheris, L., Nabi, S. D., Povarov, K. Yu., Yan, Z., Moshe, A. Glezer, Nagel, U., Rõõm, T., Podlesnyak, A., Ressouche, E., Beauvois, K., Stewart, J. R., Manuel, P., Khalyavin, D., Orlandi, F., Zheludev, A.
Magnetic structures and spin excitations are studied across the phase diagram of the geometrically frustrated S = 3/2 quantum antiferromagnet Cs2CoBr4 in magnetic fields applied along the magnetic easy axis, using neutron diffraction, inelastic neutr
Externí odkaz:
http://arxiv.org/abs/2311.10535
Autor:
Dee, P. M., Kim, J. S., Hire, A. C., Lim, J., Fanfarillo, L., Sinha, S., Hamlin, J. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R.
Publikováno v:
Phys. Rev. B 109, 104520, March 22, 2024
Recent investigations into MoB$_{2}$ have unveiled a direct connection between a pressure-induced structural transition to a P6/mmm space group structure and the emergence of superconductivity, producing critical temperatures up to 32 K at 100 GPa. T
Externí odkaz:
http://arxiv.org/abs/2310.03818
Autor:
Geisler, Benjamin, Hamlin, James J., Stewart, Gregory R., Hennig, Richard G., Hirschfeld, P. J.
Publikováno v:
npj Quantum Materials 9, 38 (2024)
Motivated by the recent observation of superconductivity with $T_c \sim 80$ K in pressurized La3Ni2O7 [Nature 621, 493 (2023)], we explore the structural and electronic properties in A3Ni2O7 bilayer nickelates (A=La-Lu, Y, Sc) as a function of hydros
Externí odkaz:
http://arxiv.org/abs/2309.15078
Autor:
Li, Jiaheng, Stewart, Jonathan R.
Multilayer networks are a network data structure in which elements in a population of interest have multiple modes of interaction or relation, represented by multiple networks called layers. We propose a novel class of models for cross-layer dependen
Externí odkaz:
http://arxiv.org/abs/2307.14982