Zobrazeno 1 - 10
of 573
pro vyhledávání: '"Lorenzana, J"'
Autor:
Lorenzana, J., Seibold, G.
We investigate order parameter fluctuations in the Hubbard model within a time-dependent Gutzwiller approach. While in the weak coupling limit we find that the amplitude fluctuations are short-lived due to a degeneracy with the energy of the edge of
Externí odkaz:
http://arxiv.org/abs/2305.19188
Autor:
Jezierski, D., Koteras, K., Domanski, M., Połczynski, P., Mazej, Z., Lorenzana, J., Grochala, W.
High-temperature solid-state reaction between orthorhombic AgF2 and monoclinic CuF2 (y = 0.15, 0.3, 0.4, 0.5) in a fluorine atmosphere resulted in coexisting solid solutions of Cu-poor orthorhombic and Cu-rich monoclinic phases with stoichiometry Ag1
Externí odkaz:
http://arxiv.org/abs/2304.02257
We investigate the physics of an adiabatic transition from a BCS superconductor to a Fermi liquid for an exponentially slow decreasing pairing interaction. In particular, we show that the metal keeps memory of the parent BCS state so it is possible t
Externí odkaz:
http://arxiv.org/abs/2107.11638
Autor:
Piekarz, P., Legut, D., Baldini, E., Belvin, C. A., Kołodziej, T., Tabiś, W., Kozłowski, A., Kąkol, Z., Tarnawski, Z., Lorenzana, J., Gedik, N., Oleś, A. M., Honig, J. M., Parlinski, K.
Publikováno v:
Phys. Rev. B 103, 104303 (2021)
Using density functional theory, we study the lattice dynamical properties of magnetite (Fe$_3$O$_4$) in the high-temperature cubic and low-temperature monoclinic phases. The calculated phonon dispersion curves and phonon density of states are compar
Externí odkaz:
http://arxiv.org/abs/2010.11564
Autor:
Seibold, G., Lorenzana, J.
Publikováno v:
Phys. Rev. B 102, 144502 (2020)
We investigate the quench dynamics of strongly coupled superconductors within the time-dependent Gutzwiller approximation from the BCS to the BEC regime and evaluate the out-of-equilibrium transient spectral density and optical conductivity relevant
Externí odkaz:
http://arxiv.org/abs/2004.02454
Publikováno v:
SciPost Phys. 8, 003 (2020)
From systematic analysis of the high pulsed magnetic field resistance data of La$_{2-x}$Sr$_x$CuO$_{4}$ thin films, we extract an experimental phase diagram for several doping values ranging from the very underdoped to the very overdoped regimes. Our
Externí odkaz:
http://arxiv.org/abs/1908.03408
Autor:
Miao, H., Fumagalli, R., Rossi, M., Lorenzana, J., Seibold, G., Kummer, F. Yakhou-Harris K., Brookes, N. B., Gu, G. D., Braicovich, L., Ghiringhelli, G., Dean, M. P. M.
Publikováno v:
Phys. Rev. X 9, 031042 (2019)
Although charge density waves (CDWs) are omnipresent in cuprate high-temperature superconductors, they occur at significantly different wavevectors, confounding efforts to understand their formation mechanism. Here, we use resonant inelastic x-ray sc
Externí odkaz:
http://arxiv.org/abs/1906.07149
Autor:
Leridon, B., Vanacken, J., Moshchalkov, V., Vignolle, B., Porwal, R., Budhani, R. C., Caprara, S., Attanasi, A., Grilli, M., Lorenzana, J.
Solid 4He may acquire superfluid characteristics due to the frustration of the solid phase at grain boundaries. Here, we show that an analogous effect occurs in systems with competition among charge-density-waves (CDWs) and superconductivity in the p
Externí odkaz:
http://arxiv.org/abs/1905.05606
Autor:
Miao, H., Lorenzana, J., Seibold, G., Peng, Y. Y., Amorese, A., Yakhou-Harris, F., Kummer, K., Brookes, N. B., Konik, R. M., Thampy, V., Gu, G. D., Ghiringhelli, G., Braicovich, L., Dean, M. P. M.
Publikováno v:
H. Miao et al., PNAS 114, 12430-12435 (2017)
Although all superconducting cuprates display charge-ordering tendencies, their low-temperature properties are distinct, impeding efforts to understand the phenomena within a single conceptual framework. While some systems exhibit stripes of charge a
Externí odkaz:
http://arxiv.org/abs/1701.00022
Autor:
Capitani, F., Koval, S., Fittipaldi, R., Caramazza, S., Paris, E., Mohamed, W. S., Lorenzana, J., Nucara, A., Rocco, L., Vecchione, A., Postorino, P., Calvani, P.
Publikováno v:
Physical Review B 91, 214308 (2015)
The Raman spectrum of Ba2CuGe2O7, a tetragonal insulator which develops Dzyaloshinsky- Moriya helical magnetism below TN = 3.2 K, has been detected at temperatures varying from 300 to 80 K in a single crystal, with the radiation polarized either in t
Externí odkaz:
http://arxiv.org/abs/1602.03381