Zobrazeno 1 - 10 of 308 pro vyhledávání: '"P G Pagliuso"'
1
Akademický článek
Local investigation of the crystal electric field ground-state in CeCu(Sb,Bi)$_2$ heavy fermions
Autor: Davi Zau, G. S. Freitas, P. G. Pagliuso, R. R. Urbano
Publikováno v: SciPost Physics Proceedings, Iss 11, p 017 (2023)
In this work, we performed systematic Nuclear Magnetic Resonance (NMR) and magnetic susceptibility experiments in CeCuSb$_2$ single-crystals. The main findings were compared to previous report for CeCuBi$_2$. The NMR spectra and transferred hyperfine
Externí odkaz: https://doaj.org/article/6501f664c34a45e7ac6768b25b6d00ef
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2
Akademický článek
Quantum criticality in a layered iridate
Autor: Kousik Samanta, Jean C. Souza, Danilo Rigitano, Adimir I. Morales, Pascoal G. Pagliuso, Eduardo Granado
Publikováno v: Communications Physics, Vol 4, Iss 1, Pp 1-7 (2021)
Due to a combination of strong spin orbit coupling and electron correlations iridates such as Sr2IrO4 exhibit a range of exotic quantum states that can be tuned via their electronic and magnetic properties. Here, the authors investigate the resistive
Externí odkaz: https://doaj.org/article/95df45e7fc8945fc91881a7d17672dca
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3
Akademický článek
Topological features in the ferromagnetic Weyl semimetal CeAlSi: Role of domain walls
Autor: M. M. Piva, J. C. Souza, V. Brousseau-Couture, Sopheak Sorn, K. R. Pakuszewski, Janas K. John, C. Adriano, M. Côté, P. G. Pagliuso, Arun Paramekanti, M. Nicklas
Publikováno v: Physical Review Research, Vol 5, Iss 1, p 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: https://doaj.org/article/abaf4b5302884054ad9aecb15c1d1e98
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4
Akademický článek
Surface excitations relaxation in the Kondo insulator Sm_{1−x}Gd_{x}B_{6}
Autor: J. C. Souza, M. König, M. V. Ale Crivillero, M. O. Malcolms, R. R. Urbano, Z. Fisk, P. F. S. Rosa, P. G. Pagliuso, S. Wirth, J. Sichelschmidt
Publikováno v: Physical Review Research, Vol 3, Iss 3, p 033016 (2021)
The interplay between nontrivial topological states of matter and strong electronic correlations is one of the most compelling open questions in condensed matter physics. Due to experimental challenges, there is an increasing desire to find more micr
Externí odkaz: https://doaj.org/article/fea836e4c6fa41ba90b722563f18f395
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5
Akademický článek
Systematic manipulation of the surface conductivity of SmB_{6}
Autor: M. Victoria Ale Crivillero, M. König, J. C. Souza, P. G. Pagliuso, J. Sichelschmidt, Priscila F. S. Rosa, Z. Fisk, S. Wirth
Publikováno v: Physical Review Research, Vol 3, Iss 2, p 023162 (2021)
We show that the resistivity plateau of SmB_{6} at low temperature, typically taken as a hallmark of its conducting surface state, can systematically be influenced by different surface treatments. We investigate the effect of inflicting an increasing
Externí odkaz: https://doaj.org/article/523e1516b01c4dc4af09b241297d4702
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8
Akademický článek
Metallic islands in the Kondo insulator SmB_{6}
Autor: J. C. Souza, P. F. S. Rosa, J. Sichelschmidt, M. Carlone, P. A. Venegas, M. O. Malcolms, P. M. Menegasso, R. R. Urbano, Z. Fisk, P. G. Pagliuso
Publikováno v: Physical Review Research, Vol 2, Iss 4, p 043181 (2020)
The predicted interplay between Kondo physics and nontrivial topology in SmB_{6} has stimulated many experimental reports, some of which are in apparent contradiction. The origin of the dispute may lie in the fragility of the Kondo insulating phase i
Externí odkaz: https://doaj.org/article/62c9cb18e85c40bfa671c342ec346e0b
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9
Akademický článek
Diffusive-like effects and possible non trivial local topology on the half-Heusler YPdBi compound
Autor: J. C. Souza, G. G. Lesseux, R. R. Urbano, C. Rettori, P. G. Pagliuso
Publikováno v: AIP Advances, Vol 8, Iss 5, Pp 055713-055713-6 (2018)
The non-ambiguous experimental identification of topological states of matter is one of the main interesting problems regarding this new quantum state of matter. In particular, the half-Heusler family RMT (R = rare-earth, T = Pd, Pt or Au and T = Bi,
Externí odkaz: https://doaj.org/article/4e269617066e49ed86db07b0fbcbae5e
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10
Akademický článek
Anharmonic rattling vibrations effects in the ESR of Er3+ doped SmB6 Kondo insulator
Autor: G. G. Lesseux, P. F. S. Rosa, Z. Fisk, P. Schlottmann, P. G. Pagliuso, R. R. Urbano, C. Rettori
Publikováno v: AIP Advances, Vol 7, Iss 5, Pp 055709-055709-5 (2017)
We report X-band Electron Spin Resonance (ESR) experiments on ≈ 0.2% and ≈ 0.7 % Er3+ doped SmB6 at low temperature (4 K - 40 K). The crystal field ground state of Er3+ in SmB6 is a Γ8 quartet with a nearby Γ6 excited doublet. The angular depen
Externí odkaz: https://doaj.org/article/b189cc95d0e249dfbf6cb953d51cc46a
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