Física: Últimas Submissões

Resultados 61-70 de 832

    • Magnetotransport in bismuth/cobalt multilayers : rationalizing spin-orbit proximity effect 

      Nonnig, Arthur Casa Nova (2021) [Dissertação]
      The interplay between strong spin-orbit coupling (SOC) and magnetization at interfaces has been a pathway for the observation of novel physical phenomena, quasi-particles and potential for design new devices. The interfaces ...

    • Extremely low-mass white dwarfs in interacting binary systems 

      Soethe, Leonardo Taynô Tosetto (2021) [Tese]
      Extremely low-mass white dwarfs (ELM WDs) are understood to be the result of binary evolution in which a low-mass donor star — mass of the order of that of the Sun — is stripped by its companion, leaving behind a helium-core ...

    • Wetting phenomena : from basic science to applications 

      Silvestrini, Marion Lucia (2021) [Tese]
      The study of wetting phenomena in solids is of great interest due to the multifaceted technological applications of hydrophobic, hydrophilic and oleophobic surfaces. Examples of such applications include self cleaning ...

    • Revealing the chemical evolution history of the Milky Way halo with RR Lyrae stars 

      Crestani, Juliana (2021) [Tese]
      The Galactic Halo is the component of the Milky Way that can preserve the clearest signatures of the accretion of satellites required for the built-up of the Galaxy according to the Λ cold dark matter paradigm. The nature ...

    • Transições de fases em sistemas magnéticos com frustração e desordem em grafos aleatórios 

      Silveira, Alexandre (2021) [Tese]
      Nesta tese, estudamos sistemas magnéticos com frustração e desordem em redes com conectividade finita. Especificamente, nos concentramos em grafos aleatórios, onde a existência de uma conexão entre dois sítios da rede é ...

    • Testing general relativity at galactic scales 

      Carneiro, Carlos Roberto de Melo (2021) [Dissertação]
      General Relativity (GR) has been successfully tested in Solar system scales. However, for galactic scales, this theory has been poorly tested. Moreover, several galaxy data analysis depend on the value of the Hubble constant ...

    • Asteroseismology of massive ZZ Ceti stars : an updated grid of fully evolutionary models 

      Klippel, Theylor Schumacher (2021) [Dissertação]
      White dwarfs stars are by far the most common outcome of stellar evolution, being the final product of more than 95% of all stars in the Milk Way. During their evolution, the white dwarf stars cross several zones known as ...

    • The impact of axion emission on the cooling of white dwarf stars 

      Fritzen, Jamile Katiele (2021) [Dissertação]
      Axions are theoretical particles that have been probed in stellar systems such as white dwarf stars, which have already been shown to be excellent laboratories for the study of axions with coupling to electrons. However, ...

    • Design of integrable quantum devices 

      Grün, Daniel Schneider (2021) [Dissertação]
      We present an integrable four-well model that describes the interaction and quantum tunneling of bosons in a square plaquette. This model possesses four conserved and independent quantities, of which two can be employed ...

    • Anel de partículas ativas : emergencia da coletividade, difusão e morfologia 

      Teixeira, Emanuel Fortes (2021) [Dissertação]
      Sistemas ativos são formados por entidades autônomas que absorvem individualmente energia (nutrientes, alimento) do meio para posteriormente convertê-la em energia cinética e moverem-se com movimento persistente (autopropulsão). ...