Zobrazeno 1 - 10
of 626
pro vyhledávání: '"Granado E"'
Autor:
Tartaglia, R., Arantes, F. R., Galdino, C. W., Kaneko, U. F., Avila, M. A., Granado, E., Vildosola, Veronica, Nuñez, Matias, Cornaglia, Pablo S., García, Daniel J.
Publikováno v:
Phys. Rev. B \textbf{109}, 144402 (2024)
HoNiSi$_{3}$ is an intermetallic compound characterized by two successive antiferromagnetic transitions at $T_{N1} = 6.3$ K and $T_{N2} = 10.4$ K. Here, its zero-field microscopic magnetic structure is inferred from resonant x-ray magnetic diffractio
Externí odkaz:
http://arxiv.org/abs/2404.11751
Publikováno v:
Phys. Rev. B 109, 094115 (2024)
Spin-state ordering - a periodic pattern of ions with different spin-state configurations along a crystal lattice - is a rare phenomenon, and its possible interrelation with other electronic degrees of freedom remains little explored. Here we perform
Externí odkaz:
http://arxiv.org/abs/2403.17113
Autor:
Cavichini, A. S., Orlando, M. T., Fantini, M. C. A., Tartaglia, R., Galdino, C. W., Damay, F., Porcher, F., Granado, E.
The Ca$_2$MnReO$_6$ double perovskite is a spin-orbit-assisted Mott insulator with exotic magnetic properties, including a largely non-collinear Mn$^{2+}$ spin arrangement and nearly orthogonal coupling between such spins and the much smaller Re $5d$
Externí odkaz:
http://arxiv.org/abs/2202.08220
Autor:
Galdino, C. W., Freitas, D. C., Medrano, C. P. C., Sanchez, D. R., Tartaglia, R., Rabello, L. P., Mendonça, A. A., Ghivelder, L., Continentino, M. A., Zapata, M. J. M., Pinheiro, C. B., Azevedo, G. M., Rodríguez-Velamazán, J. A., Garbarino, G., Núñez-Regueiro, M., Granado, E.
In this work, we investigate the representative case of the homometallic Co ludwigite Co$^{2+}_2$Co$^{3+}$O$_2$BO$_3$ ($Pbam$ space group) with four distinct Co crystallographic sites [$M1$-$M4$] surrounded by oxygen octahedra. The mixed-valent chara
Externí odkaz:
http://arxiv.org/abs/2107.14757
Publikováno v:
Phys. Rev. B 103, 155116 (2021)
The partial (up to 7 %) substitution of Cd for Zn in the Yb-based heavy-fermion material YbFe$_2$Zn$_{20}$ is known to induce a slight ($\sim 20$ %) reduction of the Sommerfeld specific heat coefficient $\gamma$ and a huge (up to two orders of magnit
Externí odkaz:
http://arxiv.org/abs/2104.01050
Autor:
Piva, M. M., Tartaglia, R., Freitas, G. S., Souza, J. C., Christovam, D. S., Thomas, S. M., Leão, J. B., Ratcliff, W., Lynn, J. W., Lane, C., Zhu, J. -X., Thompson, J. D., Rosa, P. F. S., Adriano, C., Granado, E., Pagliuso, P. G.
Publikováno v:
Phys. Rev. B 101, 214431 (2020)
We report the electronic and magnetic properties of stoichiometric CeAuBi$_{2}$ single crystals. At ambient pressure, CeAuBi$_{2}$ orders antiferromagnetically below a N\'{e}el temperature ($T_{N}$) of 19 K. Neutron diffraction experiments revealed a
Externí odkaz:
http://arxiv.org/abs/2008.04239
Autor:
Bufaiçal, L., Sadrollahi, E., Litterst, F. J., Rigitano, D., Granado, E., Coutrim, L. T., Araújo, E. B., Fontes, M. B., Baggio-Saitovitch, E., Bittar, E. M.
Publikováno v:
Physical Review B 102, 024436 (2020)
The delicate balance between spin-orbit coupling, Coulomb repulsion and crystalline electric field interactions observed in Ir-based oxides is usually manifested as exotic magnetic behavior. Here we investigate the evolution of the exchange coupling
Externí odkaz:
http://arxiv.org/abs/2007.15318
Publikováno v:
Phys. Rev. B 101, 075121 (2020)
The crystal lattice of Sr$_2$IrO$_4$ is investigated with synchrotron X-ray powder diffraction under hydrostatic pressures up to $P=43$ GPa and temperatures down to $20$ K. The tetragonal unit cell is maintained over the whole investigated pressure r
Externí odkaz:
http://arxiv.org/abs/1912.07330
Autor:
Veiga, L. S. I., Mardegan, J. R. L., Zimmermann, M. v., Maimone, D. T., Carneiro, F. B., Fontes, M. B., Strempfer, J., Granado, E., Pagliuso, P. G., Bittar, E. M.
Publikováno v:
Phys. Rev. B 101, 104511 (2020)
We explore the evolution of the structural phase transition of $\rm{(Sr, Ca)_3Ir_4Sn_{13}}$, a model system to study the interplay between structural quantum criticality and superconductivity, by means of high-energy x-ray diffraction measurements at
Externí odkaz:
http://arxiv.org/abs/1911.08457
Autor:
Coutrim, L. T., Rigitano, D., Macchiutti, C., Mori, T. J. A., Lora-Serrano, R., Granado, E., Sadrollahi, E., Litterst, F. J., Fontes, M. B., Baggio-Saitovitch, E., Bittar, E. M., Bufaiçal, L.
Publikováno v:
Physical Review B 100, 054428 (2019)
In the zero-field-cooled exchange bias (ZEB) effect the unidirectional magnetic anisotropy is set at low temperatures even when the system is cooled in the absence of external magnetic field. La$_{1.5}$Sr$_{0.5}$CoMnO$_{6}$ stands out as presenting t
Externí odkaz:
http://arxiv.org/abs/1909.05287