Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Burdin, Sébastien"'
Layered Nickelates have gained intensive attention as potential high-temperature superconductors, showing similarities and subtle differences to well-known Cuprates. This study introduces a modelling framework to analyze the tunability of electronic
Externí odkaz:
http://arxiv.org/abs/2407.16042
Quantum materials featuring both itinerant and localized degrees of freedom exhibit numerous exotic phases and transitions that deviate from the Ginzburg-Landau paradigm. This work uses the composite operator formalism to examine two-orbital strongly
Externí odkaz:
http://arxiv.org/abs/2407.11126
In this work, we study the effects of a transverse magnetic field in a Kondo lattice model with two $f$ orbitals interacting with the conduction electrons. The $f$ electrons that are present on the same site interact through Hund's coupling, while on
Externí odkaz:
http://arxiv.org/abs/2305.13559
We study the Kondo alloy model on a square lattice using dynamical mean-field theory (DMFT) for Kondo substitution and disorder effects, together with static mean-field approximations. We computed and analyzed photoemission properties as a function o
Externí odkaz:
http://arxiv.org/abs/2103.03182
Autor:
Burdin, Sébastien, Lacroix, Claudine
We study the low energy states of the Kondo alloy model (KAM) as function of the magnetic impurity concentration per site, x, and the conduction electron average site occupation, nc. In previous works, two different Fermi liquid regimes had been iden
Externí odkaz:
http://arxiv.org/abs/1810.05383
Publikováno v:
Phys. Rev. B 101, 205114 (2020)
We propose an effective model to describe the $A_{2g}$ signal in Raman scattering experiments in the URu$_{2}$Si$_{2}$ compound. We follow the scheme proposed earlier by Khveshchenko and Wiegmann [Phys. Rev. Lett. 73, 500 (1994)] to calculate the $A_
Externí odkaz:
http://arxiv.org/abs/1710.08942
Autor:
Farias, Carlene, Thomas, Christopher, Pépin, Catherine, Ferraz, Alvaro, Lacroix, Claudine, Burdin, Sébastien
Publikováno v:
Phys. Rev. B*94*, 134420 (2016)
An $SU({\rm n})$-symmetric generalization of the Heisenberg model for quantum spin $S$ operators is used to investigate the geometrically frustrated body-centered tetragonal (BCT) lattice with antiferromagnetic interlayer coupling $J_1$ and intralaye
Externí odkaz:
http://arxiv.org/abs/1602.00938
Autor:
Burdin, Sébastien
Ce mémoire d'habilitation à diriger les recherches présente des théories de champ moyen que j'ai appliquées à l'étude de systèmes d'électrons à fortes corrélations. Il s'appuie sur des travaux que j'ai effectués, pour certains dans la con
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00711167
http://tel.archives-ouvertes.fr/docs/00/71/11/67/PDF/Burdinhdr.pdf
http://tel.archives-ouvertes.fr/docs/00/71/11/67/PDF/Burdinhdr.pdf
Publikováno v:
In Journal of Magnetism and Magnetic Materials 15 February 2021 520
Publikováno v:
Phys. Rev. B 94, 134420 (2016)
The quantum Heisenberg model is studied in the geometrically frustrated body-centered tetragonal lattice(BCT lattice) with antiferromagnetic interlayer coupling J1 and intralayer first and second neighbor coupling J2 and J3. We introduce a variationa
Externí odkaz:
http://arxiv.org/abs/1406.7141