Lauro Barreto Braz

@usp.br

PhD studend. Institute of Physics, Materials Physics Department
University of Sao Paulo

Lauro Barreto Braz


               Download Compact PDF  
https://researchid.co/laurobbraz

RESEARCH, TEACHING, or OTHER INTERESTS

Condensed Matter Physics
4

Scopus Publications

26

Scholar Citations

3

Scholar h-index

Scopus Publications

  • Doping-dependent orbital magnetism in Chromium pnictides
    Henri G. Mendonça, George B. Martins, Lauro B. Braz
    Journal of Magnetism and Magnetic Materials, 2026
  • Interlayer interactions in La3Ni2 O7 under pressure: From s± to dxy -wave superconductivity
    Lauro B. Braz, George B. Martins, Luis G. G. V. Dias da Silva
    Physical Review Research, 2025
    We investigate the role of interaction terms in the competition between different superconducting gap symmetries in the bilayer nickelate La3Ni2O7 under high pressure. We study a two-layer, two-orbital electron model that encompasses both intra- and interlayer Coulomb interaction terms within the matrix random-phase approximation. We find that interlayer interactions favor a dxy-wave superconducting pairing symmetry over the s±-wave symmetry, which has been found to prevail when interlayer interactions are disregarded. Moreover, our findings indicate that interlayer interactions enhance the interorbital pairing, incorporating contributions from all three electron pockets, arising from both d3z2−r2 and dx2−y2 orbital characters, resulting in nodes within the gap function (not present in the s±-wave state) and consequently favoring the dxy-wave pairing.
  • Competing magnetic states on the surface of multilayer ABC-stacked graphene
    Lauro B. Braz, Tanay Nag, Annica M. Black-Schaffer
    Physical Review B, 2024
    We study interaction-mediated magnetism on the surface of ABC-multilayer graphene driven by its zero-energy topological flat bands. Using the random-phase approximation, we treat onsite Hubbard repulsion and find multiple competing magnetic states, due to both intra- and intervalley scattering, with the latter causing an enlarged magnetic unit cell. At half-filling and when the Hubbard repulsion is weak, we observe two different ferromagnetic orders. Once the Hubbard repulsion becomes more realistic, new ferrimagnetic orders arise with distinct incommensurate intra- or intervalley scattering vectors depending on interaction strength and doping, leading to a multitude of competing magnetic states. Published by the American Physical Society 2024
  • Superconductivity from spin fluctuations and long-range interactions in magic-angle twisted bilayer graphene
    Lauro B. Braz, George B. Martins, Luis G. G. V. Dias da Silva
    Physical Review B, 2024

RECENT SCHOLAR PUBLICATIONS

  • Doping-dependent orbital magnetism in Chromium pnictides
    HG Mendonça, GB Martins, LB Braz
    arXiv preprint arXiv:2601.16908 , 2026
    2026
  • Reentrant superconductivity and Stoner boundaries in twisted WSe
    LB Braz, LGGV da Silva
    arXiv preprint arXiv:2601.12170 , 2026
    2026
  • Interlayer interactions in under pressure: From to -wave superconductivity
    LB Braz, GB Martins, LGGVD da Silva
    Physical Review Research 7 (3), 033023 , 2025
    2025
    Citations: 8
  • Competing magnetic states on the surface of multilayer ABC-stacked graphene
    LB Braz, T Nag, AM Black-Schaffer
    Physical Review B 110 (24), L241401 , 2024
    2024
    Citations: 6
  • Superconductivity from spin fluctuations and long-range interactions in magic-angle twisted bilayer graphene
    LB Braz, GB Martins, LGGV Dias da Silva
    Physical Review B 109 (18), 184502 , 2024
    2024
    Citations: 9
  • Charge and spin fluctuations in superconductors with intersublattice and interorbital interactions
    LB Braz, GB Martins, LGGV da Silva
    arXiv preprint arXiv:2403.02453 , 2024
    2024
    Citations: 3
  • Transições de fase e modelos interagentes para a camada torcida de grafeno no ângulo mágico
    LB Braz
    Universidade de São Paulo , 2024
    2024
  • Role of chemical potential in strange metal behavior
    LB Braz
    Revista Brasileira de Física 3 (1), https://doi.org/10.5281/zenodo.7757656 , 2023
    2023
  • A semi-empirical analysis of the paramagnetic susceptibility of solid state magnetic clusters
    LB Braz, FA Garcia
    arXiv preprint arXiv:2202.02792 , 2022
    2022

MOST CITED SCHOLAR PUBLICATIONS

  • Superconductivity from spin fluctuations and long-range interactions in magic-angle twisted bilayer graphene
    LB Braz, GB Martins, LGGV Dias da Silva
    Physical Review B 109 (18), 184502 , 2024
    2024
    Citations: 9
  • Interlayer interactions in under pressure: From to -wave superconductivity
    LB Braz, GB Martins, LGGVD da Silva
    Physical Review Research 7 (3), 033023 , 2025
    2025
    Citations: 8
  • Competing magnetic states on the surface of multilayer ABC-stacked graphene
    LB Braz, T Nag, AM Black-Schaffer
    Physical Review B 110 (24), L241401 , 2024
    2024
    Citations: 6
  • Charge and spin fluctuations in superconductors with intersublattice and interorbital interactions
    LB Braz, GB Martins, LGGV da Silva
    arXiv preprint arXiv:2403.02453 , 2024
    2024
    Citations: 3
  • Doping-dependent orbital magnetism in Chromium pnictides
    HG Mendonça, GB Martins, LB Braz
    arXiv preprint arXiv:2601.16908 , 2026
    2026
  • Reentrant superconductivity and Stoner boundaries in twisted WSe
    LB Braz, LGGV da Silva
    arXiv preprint arXiv:2601.12170 , 2026
    2026
  • Transições de fase e modelos interagentes para a camada torcida de grafeno no ângulo mágico
    LB Braz
    Universidade de São Paulo , 2024
    2024
  • Role of chemical potential in strange metal behavior
    LB Braz
    Revista Brasileira de Física 3 (1), https://doi.org/10.5281/zenodo.7757656 , 2023
    2023
  • A semi-empirical analysis of the paramagnetic susceptibility of solid state magnetic clusters
    LB Braz, FA Garcia
    arXiv preprint arXiv:2202.02792 , 2022
    2022