Academic literature on the topic 'Inversão de spin'

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Journal articles on the topic "Inversão de spin"

1

Bernardini, Alex Eduardo de, and Stefano De Leo. "Uma discussão sobre oscilações quirais e inversão de spin." Revista Brasileira de Ensino de Física 27, no. 4 (2005): 507–15. http://dx.doi.org/10.1590/s1806-11172005000400003.

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Neste trabalho desenvolvemos uma breve discussão sobre o conceito de quiralidade que pode aparecer ao construirmos uma lagrangiana de interação da teoria eletrofraca. Para melhor contextualizarmos os conceitos que estamos estudando, introduzimos uma breve descrição do status atual do problema de oscilação quântica de neutrinos. De fato, temos na quiralidade, assim como na helicidade, um caráter quântico de importância fundamental no estudo de física de neutrinos e de física de partículas de maneira geral. Neste contexto, os efeitos da oscilação quiral podem ser explicados como uma implicação d
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2

Muinonen, Karri, Johanna Torppa, Jenni Virtanen, et al. "Spins, shapes, and orbits for near-Earth objects by Nordic NEON." Proceedings of the International Astronomical Union 2, S236 (2006): 309–20. http://dx.doi.org/10.1017/s1743921307003377.

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AbstractThe observing program of the Nordic Near-Earth-Object Network (NEON) accrues knowledge about the physical and dynamical properties of near-Earth objects (NEOs) using state-of-the-art inverse methods. Photometric and astrometric observations are being carried out at the Nordic Optical Telescope. Here, the NEON observations from June 2004–September 2006 are reviewed. Statistical orbital inversion is illustrated by the so-called Volume-of-Variation method. Statistical inversion for spins and shapes is carried using a simple triaxial shape model yielding analytical disk-integrated brightne
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3

Cellino, A., D. Hestroffer, X. P. Lu, K. Muinonen, and P. Tanga. "Inversion of HIPPARCOS and Gaia photometric data for asteroids." Astronomy & Astrophysics 631 (October 22, 2019): A67. http://dx.doi.org/10.1051/0004-6361/201936059.

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Context. Sparse photometric data can be used to determine the spin properties and infer information about the shapes of asteroids. The algorithm adopted for the inversion of Gaia photometric data assumes, for the sake of simplicity and to minimize CPU execution time, that the objects have triaxial ellipsoid shapes. In the past, this algorithm was tested against large sets of simulated data and small numbers of sparse photometric measurements obtained by HIPPARCOS. Aims. After the second Gaia data release, it is now possible to test the inversion algorithm against small samples of actual Gaia d
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4

Takayanagi, Toshiyuki, Yuya Watabe, and Takaaki Miyazaki. "Reduced-Dimensionality Quantum Dynamics Study of the 3Fe(CO)4 + H2 → 1FeH2(CO)4 Spin-inversion Reaction." Molecules 25, no. 4 (2020): 882. http://dx.doi.org/10.3390/molecules25040882.

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Many chemical reactions of transition metal compounds involve a change in spin state via spin inversion, which is induced by relativistic spin-orbit coupling. In this work, we theoretically study the efficiency of a typical spin-inversion reaction, 3Fe(CO)4 + H2 → 1FeH2(CO)4. Structural and vibrational information on the spin-inversion point, obtained through the spin-coupled Hamiltonian approach, is used to construct three degree-of-freedom potential energy surfaces and to obtain singlet-triplet spin-orbit couplings. Using the developed spin-diabatic potential energy surfaces in reduced dimen
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5

Liu, S. Y., Norman J. M. Horing, and X. L. Lei. "Inverse spin Hall effect by spin injection." Applied Physics Letters 91, no. 12 (2007): 122508. http://dx.doi.org/10.1063/1.2783254.

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6

Tenzer, Robert, Mohammad Bagherbandi, Lars E. Sjöberg, and Pavel Novák. "Isostatic Crustal Thickness Under The Tibetan Plateau And Himalayas From Satellite Gravity Gradiometry Data." Earth Sciences Research Journal 19, no. 2 (2015): 97–106. http://dx.doi.org/10.15446/esrj.v19n2.44574.

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<p>The global gravity and crustal models are used in this study to determine the regional Moho model. For this </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">purpose, we solve the Vening Meinesz-Moritz’s (VMM) inverse problem of isostasy de ned in terms of the </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">isostatic gravity gradient. The functional relation between the Moho depth and the second-order radial derivative </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';"
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Zhou, S.-G., Y.-Z. Liu, Y.-J. Ma, and C.-X. Yang. "Low-spin signature inversion in." Journal of Physics G: Nuclear and Particle Physics 22, no. 3 (1996): 415–20. http://dx.doi.org/10.1088/0954-3899/22/3/014.

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8

Lun, D. R., M. Eberspächer, K. Amos, W. Scheid, and S. J. Buckman. "Improved spin-orbit inversion method." Physical Review A 58, no. 6 (1998): 4993–96. http://dx.doi.org/10.1103/physreva.58.4993.

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9

Wang, X. R. "Light Emitting Diodes of Inverse Spin Valves." Research Letters in Physics 2008 (July 20, 2008): 1–4. http://dx.doi.org/10.1155/2008/434936.

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Light emitting diodes made out of inverse spin valves of a ferromagnetic half metal sandwiched between two nonmagnetic metals are proposed. Based on a giant spin-dependent chemical potential difference created under an external bias, the inverse spin valves are possible to emit light when electrons with the higher chemical potential flip their spins and become the electrons of the opposite spin with the lower chemical potential. The frequency of this type of light emitting diodes is tunable by the bias.
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10

Rouco, V., F. Gallego, D. Hernandez-Martin, et al. "Ferroionic inversion of spin polarization in a spin-memristor." APL Materials 9, no. 3 (2021): 031110. http://dx.doi.org/10.1063/5.0039030.

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