Zobrazeno 1 - 10
of 323
pro vyhledávání: '"Sénéchal D"'
Publikováno v:
Phys. Rev. B 108, 245122 (2023)
Two of the primary sources of error in the Cluster dynamical mean-field theory (CDMFT) technique arise from the use of finite size clusters and finite size baths, which makes the development of impurity solvers that can treat larger systems an essent
Externí odkaz:
http://arxiv.org/abs/2307.15738
Publikováno v:
Phys. Rev. B. 106, 245132 (2022)
Variational Monte Carlo is a many-body numerical method that scales well with system size. It has been extended to study the Green function only recently by Charlebois and Imada (2020). Here we generalize the approach to systems with open boundary co
Externí odkaz:
http://arxiv.org/abs/2209.08092
We study the possibility of charge order at quarter filling and antiferromagnetism at half-filling in a tight-binding model of magic angle twisted bilayer graphene. We build on the model proposed by Kang and Vafek [Physical Review X 8(3), 031088 (201
Externí odkaz:
http://arxiv.org/abs/2112.00181
It is still debated whether the low-doping Fermi surface of cuprates is composed of hole pockets or of disconnected Fermi arcs. Results from cellular dynamical mean field theory (c-DMFT) support the Fermi arcs hypothesis by predicting corresponding F
Externí odkaz:
http://arxiv.org/abs/2107.01344
Publikováno v:
PNAS 2021 Vol. 118 No. 40 e2106476118
Experiments have shown that the families of cuprate superconductors that have the largest transition temperature at optimal doping also have the largest oxygen hole content at that doping. They have also shown that a large charge-transfer gap, a quan
Externí odkaz:
http://arxiv.org/abs/2104.07087
Publikováno v:
SciPost Phys. 11, 017 (2021)
We apply cluster dynamical mean field theory with an exact-diagonalization impurity solver to a Hubbard model for magic-angle twisted bilayer graphene, built on the tight-binding model proposed by Kang and Vafek (2018), which applies to the magic ang
Externí odkaz:
http://arxiv.org/abs/2008.03748
Autor:
Lu, Xiancong, Sénéchal, D.
Publikováno v:
Phys. Rev. B 102, 085135 (2020)
We investigate the possibility of spontaneous loop currents in the two-leg ladder cuprate Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$ by applying cluster dynamical mean field theory (CDMFT) to a seven-band Hubbard model for that compound, with an exact diagon
Externí odkaz:
http://arxiv.org/abs/2006.06128
Publikováno v:
Phys. Rev. B 100, 224520 (2019)
It is well known that cellular dynamical mean-field theory (CDMFT) leads to the artificial breaking of translation invariance. In spite of this, it is one of the most successful methods to treat strongly correlated electrons systems. Here, we investi
Externí odkaz:
http://arxiv.org/abs/1909.10141
Publikováno v:
Phys. Rev. B 100, 094506 (2019)
Superfluid stiffness $\rho_s$ is a defining characteristic of the superconducting state, allowing phase coherence and supercurrent. It is accessible experimentally through the penetration depth. Coexistence of $d$-wave superconductivity with other ph
Externí odkaz:
http://arxiv.org/abs/1906.06409
Autor:
Kaba, S. -O., Sénéchal, D.
Publikováno v:
Phys. Rev. B 100, 214507 (2019)
The possible superconducting states of strontium ruthenate (Sr$_2$RuO$_4$) are organized into irreducible representations of the point group $D_{4h}$, with a special emphasis on nodes occurring within the superconducting gap. Our analysis covers the
Externí odkaz:
http://arxiv.org/abs/1905.10467