Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Martins, Cyril"'
In the quest of new exotic phases of matter due to the interplay of various interactions, iridates hosting a spin-orbit entangled $j_{\mathrm{eff}}=1/2$ ground state have been in the spotlight in recent years. Also in view of parallels with the low-e
Externí odkaz:
http://arxiv.org/abs/2312.13962
Autor:
Chakrabarti, Ankita, Laflorencie, Nicolas, Georgeot, Bertrand, Martins, Cyril, Lemarié, Gabriel
Interacting fermions in the presence of disorder pose one of the most challenging problems in condensed matter physics, primarily due to the absence of accurate numerical tools. Our investigation delves into the intricate interplay between interactio
Externí odkaz:
http://arxiv.org/abs/2312.09247
Autor:
Chakrabarti, Ankita, Martins, Cyril, Laflorencie, Nicolas, Georgeot, Bertrand, Brunet, Éric, Lemarié, Gabriel
Publikováno v:
SciPost Phys. 15, 211 (2023)
We study the random transverse field Ising model on a finite Cayley tree. This enables us to probe key questions arising in other important disordered quantum systems, in particular the Anderson transition and the problem of dirty bosons on the Cayle
Externí odkaz:
http://arxiv.org/abs/2212.13593
Autor:
Louat, Alex, Lenz, Benjamin, Biermann, Silke, Martins, Cyril, Bertran, François, Fèvre, Patrick Le, Rault, Julien E., Bert, Fabrice, Brouet, Véronique
Publikováno v:
Phys. Rev. B 100, 205135 (2019)
Sr2IrO4 is characterized by a large spin-orbit coupling, which gives rise to bands with strongly entangled spin and orbital characters, called J=1/2 and J=3/2. We use light-polarization dependent ARPES to study directly the orbital character of these
Externí odkaz:
http://arxiv.org/abs/1907.01247
Autor:
Jeong, Jaehong, Lenz, Benjamin, Gukasov, Arsen, Fabreges, Xavier, Sazonov, Andrew, Hutanu, Vladimir, Louat, Alex, Bounoua, Dalila, Martins, Cyril, Biermann, Silke, Brouet, Véronique, Sidis, Yvan, Bourges, Philippe
Publikováno v:
Phys. Rev. Lett. 125, 097202 (2020)
$5d$ iridium oxides are of huge interest due to the potential for new quantum states driven by strong spin-orbit coupling. The strontium iridate Sr$_2$IrO$_4$ is particularly in the spotlight because of the so-called $j_\text{eff}=1/2$ state consisti
Externí odkaz:
http://arxiv.org/abs/1904.09139
The spin-orbit Mott insulator Sr${}_2$IrO${}_4$ has attracted a lot of interest in recent years from theory and experiment due to its close connection to isostructural high-temperature copper oxide superconductors. Despite of not being superconductin
Externí odkaz:
http://arxiv.org/abs/1903.09219
Autor:
Martins, Cyril, Lenz, Benjamin, Perfetti, Luca, Brouet, Véronique, Bertran, François, Biermann, Silke
Publikováno v:
Phys. Rev. Materials 2, 032001 (2018)
We address the role of non-local Coulomb correlations and short-range magnetic fluctuations in the high-temperature phase of Sr$_2$IrO$_4$ within state-of-the-art spectroscopic and first-principles theoretical methods. Introducing a novel cluster dyn
Externí odkaz:
http://arxiv.org/abs/1801.08916
The interplay of spin-orbit interactions and Coulomb correlations has become a hot topic in condensed matter theory. Here, we review recent advances in dynamical mean-field theory-based electronic structure calculations for iridates and rhodates. We
Externí odkaz:
http://arxiv.org/abs/1612.07546
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Autor:
Altmeyer, Michaela, Jeschke, Harald O., Hijano-Cubelos, Oliver, Martins, Cyril, Lechermann, Frank, Koepernik, Klaus, Santander-Syro, Andres F., Rozenberg, Marcelo J., Valenti, Roser, Gabay, Marc
Publikováno v:
Phys. Rev. Lett. 116, 157203 (2016)
Motivated by recent spin- and angular-resolved photoemission (SARPES) measurements performed on the two-dimensional electronic states confined near the (001) surface of SrTiO$_3$ in the presence of oxygen vacancies, we explore their spin structure by
Externí odkaz:
http://arxiv.org/abs/1511.08614