Zobrazeno 1 - 10
of 22
pro vyhledávání: '"de Araújo, Clodoaldo I. L."'
Autor:
Lopes, Rovan F., Tumelero, Milton A., de Araujo, Clodoaldo I. L., de Andrade, Antonio M. H., Mesquita, Fabiano, Carmo, Danusa, Colauto, F., Ortiz, W. A., Pureur, P.
The magnetic textures generated by a perpendicularly applied magnetic field at the ferromagnetic layer of $Co/Al_{2}O_{3}/Nb$ thin film heterostructures are investigated using magneto-optical imaging and micromagnetic simulations. It is observed that
Externí odkaz:
http://arxiv.org/abs/2410.18028
Autor:
de Araujo, Clodoaldo I. L., Virtanen, Pauli, Spies, Maria, González-Orellana, Carmen, Kerschbaumer, Samuel, Ilyn, Maxim, Rogero, Celia, Heikkilä, Tero T., Giazotto, Francesco, Strambini, E.
Publikováno v:
Nature Communications (2024)
Heat engines are key devices that convert thermal energy into usable energy. Strong thermoelectricity, at the basis of electrical heat engines, is present in superconducting spin tunnel barriers at cryogenic temperatures where conventional semiconduc
Externí odkaz:
http://arxiv.org/abs/2310.18132
Autor:
Geng, Zhuoran, Hijano, Alberto, Ilic, Stefan, Ilyn, Maxim, Maasilta, Ilari J., Monfardini, Alessandro, Spies, Maria, Strambini, Elia, Virtanen, Pauli, Calvo, Martino, Gonzalez-Orellana, Carmen, Helenius, Ari P., Khorshidian, Sara, de Araujo, Clodoaldo I. L., Levy-Bertrand, Florence, Rogero, Celia, Giazotto, Francesco, Bergeret, F. Sebastián, Heikkilä, Tero T.
We review the use of hybrid thin films composed of superconductors and ferromagnets for creating non-reciprocal electronic components and self-biased detectors of electromagnetic radiation. We begin by introducing the theory behind these effects, as
Externí odkaz:
http://arxiv.org/abs/2302.12732
Publikováno v:
Phys. Rev. Applied 18, 014070 (2022)
We study memristive effects in Kagom\'{e} nanopatterned permalloy. We observe that at low frequencies a thermistor effect is present, a phenomenon arising due to the lithography and absent in similar experiments for thin films. However, we also show
Externí odkaz:
http://arxiv.org/abs/2201.11200
Autor:
Teixeira, Hamilton A., Bernardo, Maria F., Saccone, Michael D., Caravelli, Francesco, Nisoli, Cristiano, de Araujo, Clodoaldo I. L.
Publikováno v:
Journal of Magnetism and Magnetic Materials 596, 171929 (2024)
The notion of magnetic monopoles has puzzled physicists since the introduction of Maxwell's Equations and famously Dirac had hypothesized them in the context of quantum mechanics. While they have proved experimentally elusive as elementary particles,
Externí odkaz:
http://arxiv.org/abs/2112.06058
Autor:
Caravelli, Francesco, Iacocca, Ezio, Chern, Gia-Wei, Nisoli, Cristiano, de Araujo, Clodoaldo I. L.
Publikováno v:
Communications Physics 5, 166 (2022)
In the last decade, nanoscale resistive devices with memory have been the subject of intense study because of their possible use in brain-inspired computing. However, operational endurance is one of the limiting factors in the adoption of such techno
Externí odkaz:
http://arxiv.org/abs/2109.05101
Autor:
Martins, Fernando F., Paiva, Teônis S., Duarte, Daniel G., Rodrigues, João H., Mól, Lucas A. S., Freitas, Jerome Borme Paulo P., de Araujo, Clodoaldo I. L.
In this letter we present emergent screening of magnetic monopole and dipole by the presence of 20nm aluminum cover layer. Our results were obtained in base of magnetic atomic force measurements, performed after external magnetic field steps applicat
Externí odkaz:
http://arxiv.org/abs/2011.05379
Autor:
Loreto, Renan P., Zhang, Xichao, Zhou, Yan, Ezawa, Motohiko, Liu, Xiaoxi, de Araújo, Clodoaldo I. L.
Publikováno v:
J. Magn. Magn. Mater. 482, 155 (2019)
In skyrmion-based racetrack memories, the information encoded by skyrmions may be destroyed due to the skyrmion Hall effect, which can be surmounted by using synthetic antiferromagnetic racetracks. Hence, the manipulation of skyrmions in synthetic an
Externí odkaz:
http://arxiv.org/abs/1807.07124
Publikováno v:
New J. Phys. 18 ( 2016 ) 093018
Scanning probe microscopy (SPM) is a fundamental technique for the analysis of surfaces. In the present work, the interface statistics of surfaces scanned with a probe tip was analyzed for both \textit{in silico} and experimental systems that \textit
Externí odkaz:
http://arxiv.org/abs/1601.04608
Autor:
de Araujo, Clodoaldo I. L., Fonseca, Jakson M., Sinnecker, João P., Delatorre, Rafael G., Garcia, Nicolas G., Pasa, André A.
Publikováno v:
J. Appl. Phys. 116, 183906 (2014)
We have studied ferromagnetic Permalloy clusters obtained by electrodeposition on n-type silicon. Magnetization measurements reveal hysteresis loops almost independent on temperature and very similar in shape to those obtained in nanodisks with diame
Externí odkaz:
http://arxiv.org/abs/1407.3813