Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Silva, N"'
Autor:
Castro, I., Riveros, A., Palma, J. L., Abelmann, L., Tomasello, R., Rodrigues, D. R., Giordano, A., Finocchio, G., Gallardo, R., Vidal-Silva, N.
In this work, we explored theoretically the spatial resolution of magnetic solitons and the variations of their sizes when subjected to a Magnetic Force Microscopy (MFM) measurement. Next to tip-sample separation, we considered reversal in the magnet
Externí odkaz:
http://arxiv.org/abs/2406.04007
We propose a magnon-based thermal machine in two-dimensional (2D) magnetic insulators. The thermodynamical cycles are engineered by exposing a magnon spin system to thermal baths at different temperatures and tuning the Dzyaloshinskii-Moriya (DM) int
Externí odkaz:
http://arxiv.org/abs/2404.08153
Publikováno v:
Appl. Phys. Lett. 123, 102405 (2023)
Through micromagnetic simulations, this work analyzes the stability of Bloch points in magnetic nanospheres and the possibility of using an array of such particles to compose a system with the features of a magnetic trap. We show that a BP can be nuc
Externí odkaz:
http://arxiv.org/abs/2306.01680
Autor:
da Silva, B. Pinheiro, Santos, G. H. dos, de Oliveira, A. G., da Silva, N. Rubiano, Buono, W. T., Gomes, R. M., Soares, W. C., Jesus-Silva, A. J., Fonseca, E. J. S., Ribeiro, P. H. Souto, Khoury, A. Z.
A triangular-lattice pattern is observed in light beams resulting from the spatial cross modulation between an optical vortex and a triangular shaped beam undergoing parametric interaction. Both up- and down-conversion processes are investigated, and
Externí odkaz:
http://arxiv.org/abs/2206.06153
Autor:
Hengeveld, S. B., da Silva, N. Rubiano, Gonçalves, D. S., Ribeiro, P. H. Souto, Mucherino, A.
Distance geometry problem belongs to a class of hard problems in classical computation that can be understood in terms of a set of inputs processed according to a given transformation, and for which the number of possible outcomes grows exponentially
Externí odkaz:
http://arxiv.org/abs/2105.12118
Publikováno v:
Phys. Rev. D 103, 124019 (2021)
Non-minimally coupled curvature-matter gravity models are an interesting alternative to the Theory of General Relativity and to address the dark energy and dark matter cosmological problems. These models have complex field equations that prevent a fu
Externí odkaz:
http://arxiv.org/abs/2103.02720
Autor:
de Oliveira, A. G., Gomes, R. M., Brasil, V. C. C., da Silva, N. Rubiano, Céleri, L. C., Ribeiro, P. H. Souto
The generalized amplitude damping (GAD) quantum channel implements the interaction between a qubit and an environment with arbitrary temperature and arbitrary interaction time. Here, we implement a photonic version of the GAD for the case of infinite
Externí odkaz:
http://arxiv.org/abs/2010.01203
Publikováno v:
Phys. Rev. B 102, 104411 (2020)
In this work, we report the theoretical possibility of generating magnon polaron excitations through a space-varying magnetic field. The spatial dependence of the magnetic field in the Zeeman interaction gives rise to a magnon-phonon coupling when a
Externí odkaz:
http://arxiv.org/abs/2006.09839
Autor:
de Oliveira, A. G., da Silva, N. Rubiano, de Araújo, R. Medeiros, Ribeiro, P. H. Souto, Walborn, S. P.
Publikováno v:
Phys. Rev. Applied 14, 024048 (2020)
We present a quantum optics approach for describing stimulated parametric down conversion in the two type-I crystal "sandwich" configuration, which allows for parametric interaction of vector vortex beams. We analyze the conditions for which phase co
Externí odkaz:
http://arxiv.org/abs/2005.01855
Autor:
Ribeiro, P. H. Souto, Häffner, T., Zanin, G. L., da Silva, N. Rubiano, de Araújo, R. Medeiros, Silva, W. C. S., de Assis, R. J., Céleri, L. C., Forbes, A.
Publikováno v:
Phys. Rev. A 101, 052113 (2020)
Optical modes possessing orbital angular momentum constitute a very useful platform for experimental studies on the quantum limits of Thermodynamics. Here, we present experimental results for entangled photon pairs subjected to thin turbulence simula
Externí odkaz:
http://arxiv.org/abs/1912.06447