Zobrazeno 1 - 10
of 1 145
pro vyhledávání: '"Costa, P. T."'
Autor:
da Silva, Sérgio Luiz E. F., Costa, Felipe T., Karsou, Ammir, de Souza, Adriano, Capuzzo, Felipe, Moreira, Roger M., Lopez, Jorge, Cetale, Marco
We develop a workflow based on full-waveform inversion (FWI) to estimate P-wave velocities in a deepwater Brazilian pre-salt field using the recently introduced circular shot ocean bottom node (OBN) acquisition geometry. Such a geometry comprises a s
Externí odkaz:
http://arxiv.org/abs/2405.17330
Autor:
Caha, Ihsan, Boddapatti, Loukya, Ahmad, Aqrab ul, Banobre, Manuel, Costa, Antonio T., Enyashin, Andrey N., Li, Weibin, Gargiani, Pierluigi, Valvidares, Manuel, Fernandez-Rossier, Joaquin, Deepak, Francis Leonard
CrI3 is a layered ferromagnetic insulator that has recently attracted enormous interest as it was the first example of a stand-alone monolayer ferromagnet, paving the way towards the study of two-dimensional magnetic materials and their use as buildi
Externí odkaz:
http://arxiv.org/abs/2405.14967
Altermagnets are a new class of magnetic materials with zero net magnetization (like antiferromagnets) but spin-split electronic bands (like ferromagnets) over a fraction of reciprocal space. As in antiferromagnets, magnons in altermagnets come in tw
Externí odkaz:
http://arxiv.org/abs/2405.12896
Autor:
Henriques, J. C. G., Jacob, D., Molina-Sánchez, A., Catarina, G., Costa, A. T., Fernández-Rossier, J.
The study of open-shell nanographenes has relied on a paradigm where spins are the only low-energy degrees of freedom. Here we show that some nanographenes can host low-energy excitations that include strongly coupled spin and orbital degrees of free
Externí odkaz:
http://arxiv.org/abs/2312.04938
Publikováno v:
Phys. Rev. Research 5, 043226 (2023)
We provide a comprehensive theory of magnetic phases in two-dimensional triangulene crystals, using both Hubbard model and density functional theory (DFT) calculations. We consider centrosymmetric and non-centrosymmetric triangulene crystals. In all
Externí odkaz:
http://arxiv.org/abs/2306.17153
Publikováno v:
Phys. Rev. B 108, 184423 (2023)
We propose a new class of magnetic proximity effects based on the spin dependent hybridization between the electronic states at the Fermi energy in a non-magnetic conductor and the narrow spin split bands of a ferromagnetic insulator. Unlike conventi
Externí odkaz:
http://arxiv.org/abs/2305.16813
We study indirect exchange interactions between localized spins of magnetic impurities in spin-valley coupled systems described with the Kane-Mele model. Our model captures the main ingredients of the energy bands of 1H transition metal dichalcogenid
Externí odkaz:
http://arxiv.org/abs/2211.15574
Publikováno v:
Nano Lett. 2023 23 (10) 4510
Magnons and plasmons are two very different types of collective modes, acting on the spin and charge degrees of freedom, respectively. At first sight, the formation of hybrid plasmon-magnon polaritons in heterostructures of plasmonic and magnetic sys
Externí odkaz:
http://arxiv.org/abs/2211.08949
Autor:
Matzeu, G. A., Lieu, M., Costa, M. T., Reeves, J. N., Braito, V., Dadina, M., Nardini, E., Boorman, P. G., Parker, M. L., Sim, S. A., Barret, D., Kammoun, E., Middei, R., Giustini, M., Brusa, M., Cabrera, J. Pérez, Marchesi, S.
We present a new X-Ray Accretion Disk-wind Emulator (\textsc{xrade}) based on the 2.5D Monte Carlo radiative transfer code which provides a physically-motivated, self-consistent treatment of both absorption and emission from a disk-wind by computing
Externí odkaz:
http://arxiv.org/abs/2207.13731
Autor:
Moutinho, João P., Pezzutto, Marco, Pratapsi, Sagar, da Silva, Francisco Ferreira, De Franceschi, Silvano, Bose, Sougato, Costa, António T., Omar, Yasser
Publikováno v:
PRX Energy 2, 033002 (2023)
We present a proposal for a one-bit full-adder to process classical information based on the quantum reversible dynamics of a triple quantum dot system. The device works via the repeated execution of a Fredkin gate implemented through the dynamics of
Externí odkaz:
http://arxiv.org/abs/2206.14241