Zobrazeno 1 - 10
of 547
pro vyhledávání: '"Pagliuso, P. G."'
Autor:
Cantarino, Marli R., Pakuszewski, K. R., Salzmann, Björn, Moya, Pedro H. A., Neto, Wagner R. da Silva, Freitas, G. S., Pagliuso, P. G., Adriano, C., Brito, Walber H., Garcia, Fernando A.
Superconductivity (SC) is absent in Cr-substituted BaFe$_{2}$As$_{2}$ (CrBFA), a well-established but poorly understood topic. Additionally, the suppression of the spin density wave transition temperature ($T_{\text{SDW}}$) in CrBFA and Mn-substitute
Externí odkaz:
http://arxiv.org/abs/2312.09014
Autor:
Souza, J. C., Crivillero, M. V. Ale, Dawczak-Dębicki, H., Ptok, Andrzej, Pagliuso, P. G., Wirth, S.
Publikováno v:
Phys. Rev. B 108, 165154 (2023)
Half-Heusler systems host a plethora of different ground states, especially with non-trivial topology. However, there is still a lack of spectroscopic insight into the corresponding band inversion in this family. In this work, we locally explore the
Externí odkaz:
http://arxiv.org/abs/2310.15708
Autor:
Cantarino, Marli R., Pakuszewski, Kevin R., Salzmann, Björn, Moya, Pedro H. A., Neto, Wagner R. da Silva, Freitas, Gabriel S., Pagliuso, P. G., Brito, Walber H., Monney, Claude, Adriano, C., Garcia, Fernando A.
Chemical substitution is commonly used to explore new ground states in materials, yet the role of disorder is often overlooked. In Mn-substituted BaFe$_{2}$As$_{2}$ (MnBFA), superconductivity (SC) is absent, despite being observed for nominal hole-do
Externí odkaz:
http://arxiv.org/abs/2307.12879
Autor:
Piva, M. M., Souza, J. C., Lombardi, G. A., Pakuszewski, K. R., Adriano, C., Pagliuso, P. G., Nicklas, M.
Publikováno v:
Phys. Rev. Mater. 7, 074204 (2023)
The Weyl semimetal CeAlGe is a promising material to study nontrivial topologies in real and momentum space due to the presence of a topological magnetic phase. Our results at ambient pressure show that the electronic properties of CeAlGe are extreme
Externí odkaz:
http://arxiv.org/abs/2303.12144
Autor:
Piva, M. M., Souza, J. C., Brousseau-Couture, V., Sorn, Sopheak, Pakuszewski, K. R., John, Janas K., Adriano, C., Côté, M., Pagliuso, P. G., Paramekanti, Arun, Nicklas, M.
Publikováno v:
Phys. Rev. Research 5 013068 (2023)
In the ferromagnetic (FM) Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. Our quantum oscillation (QO) data indicate that the FM ordering modifies the Fermi surface topology and also leads to an unusual drop in the
Externí odkaz:
http://arxiv.org/abs/2301.13707
Autor:
Souza, J. C., Carlone, M., Lesseux, G. G., Pizzi, H. B., Freitas, G. S., Urbano, R. R., Venegas, P. A., Pagliuso, P. G.
The gap opening mechanism of a topological insulator, the quantum anomalous Hall effect and the axion physics are still pressing open questions and a microscopic viewpoint to further understand the role of magnetism in topology is highly desirable. I
Externí odkaz:
http://arxiv.org/abs/2211.16048
Autor:
Carlone, M., Souza, J. C., Sichelschmidt, J., Rosa, P. F. S., Urbano, R. R., Pagliuso, P. G., Fisk, Z., Venegas, P. A., Schlottmann, P., Rettori, C.
This work reports on the temperature dependence of the electron spin resonance (ESR) of Gd$^{3+}$-doped SmB$_{6}$ single crystals at X- and Q-band microwave frequencies in different crystallographic directions. We found an anomalous inhomogeneous bro
Externí odkaz:
http://arxiv.org/abs/2201.10940
Autor:
Souza, J. C., Thomas, S. M., Bauer, E. D., Thompson, J. D., Ronning, F., Pagliuso, P. G., Rosa, P. F. S.
Publikováno v:
Phys. Rev. B 105, 035135 (2022)
Colossal magnetoresistance (CMR) emerges from intertwined spin and charge degrees of freedom in the form of ferromagnetic clusters also known as trapped magnetic polarons. As a result, CMR is rarely observed in antiferromagnetic materials. Here we us
Externí odkaz:
http://arxiv.org/abs/2201.04464
Autor:
de Figueiredo, A. G., Cantarino, M. R., Neto, W. R. da Silva, Pakuszewski, K. R., Grossi, R., Christovam, D. S., Souza, J. C., Piva, M. M., Freitas, G. S., Pagliuso, P. G., Adriano, C., Garcia, F. A.
The polarization dependence of the near edge x-ray absorption spectroscopy (XANES) is an element specific probe to the real-space distribution of the density of unoccupied states in solid-state materials. In this paper, we present Fe and As $K$-edge
Externí odkaz:
http://arxiv.org/abs/2112.09980
Autor:
Piva, M. M., Souza, J. C., Brousseau-Couture, V., Pakuszewski, K. R., John, Janas K., Adriano, C., Côté, M., Pagliuso, P. G., Nicklas, M.
Publikováno v:
extended version published in Phys. Rev. Research 5 013068 (2023)
In the ferromagnetic Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. We use external pressure as an effective tuning parameter and relate three observations to the presence of a nontrivial topology in its ferromagn
Externí odkaz:
http://arxiv.org/abs/2111.05742