Corentin Morice

Electronic and magnetic properties of superconducting LnO1-x F x BiS2 (Ln = La, Ce, Pr, and Nd) from first principles.

A density functional theory study of the BiS2 superconductors containing rare-earths: LnO1-x F x BiS2 (Ln  =  La, Ce, Pr, and Nd) is presented. We find that CeO0.5F0.5BiS2 has competing ferromagnetic and weak antiferromagnetic tendencies, the first one corresponding to experimental results. We show that PrO0.5F0.5BiS2 has a strong tendency for magnetic order, which can be ferromagnetic or antiferromagnetic depending on subtle differences in 4f orbital occupations. We demonstrate that NdO0.5F0.5BiS2 has a stable magnetic ground state with weak tendency to order. Finally, we show that the change of rare earth does not affect the Fermi surface, and predict that CeOBiS2 should display a pressure induced phase transition to a metallic, if not superconducting, phase under pressure.

Fermi surfaces and orbital polarization in superconducting CeO0.5 F0.5BiS2 revealed by angle-resolved photoemission spectroscopy

We have investigated the electronic structure of BiS

Effects of stoichiometric doping in superconducting Bi-O-S compounds

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Evolution of Hall resistivity and spectral function with doping in the SU(2) theory of cuprates

-based CeO

Hidden fluctuations close to a quantum bicritical point

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Weak phonon-mediated pairing in BiS2 superconductor from first principles

F

Electronic structure predictions in Bi-O-S systems

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Phase diagram of the underdoped cuprates at high magnetic field

BiS

Collective mode in the SU(2) theory of cuprates

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Pseudo-spin skyrmions in the phase diagram of cuprate superconductors

superconductor using polarization-dependent angle-resolved photoemission spectroscopy (ARPES), and succeeded in elucidating the orbital characters on the Fermi surfaces. In the rectangular Fermi pockets around X point, the straight portion parallel to the