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Publications (9)

cond-mat.str-el2023

Evolution of the spectral lineshape at the magnetic transition in Sr2IrO4 and Sr3Ir2O7

Paul Foulquier, Marcello Civelli, Marcelo Rozenberg +8

Sr2IrO4 and Sr3Ir2O7 form two families of spin-orbit Mott insulators with quite different charge gaps and an antiferromagnetic (AF) ground state. This offers a unique opportunity t…

cond-mat.str-el2016

ARPES view of orbitally resolved quasiparticle lifetimes in iron pnictides

Veronique Brouet, David LeBoeuf, Ping-Hui Lin +6

We study with ARPES the renormalization and quasiparticle lifetimes of the $d_{x y}$ and $d_{x z}$ / $d_{y z}$ orbitals in two iron pnictides, LiFeAs and Ba(Fe $_{0.92}$ Co $_{0.08}$ ) $_{2}$ A…

cond-mat.str-el2021

Elastic properties assessment in the multiferroic BiFeO3 by pump and probe method

Pierre Hemme, Philippe Djemia, Pauline Rovillain +8

We have performed elasticity measurements in the bulk multiferroic BiFeO3 (BFO) using acoustical pump and probe spectroscopy. The sound velocities of the (quasi)-longitudinal and o…

cond-mat.mtrl-sci2007

Room temperature coexistence of large electric polarization and magnetic order in BiFeO3 single crystals

Delphine Lebeugle, Dorothee Colson, Anne Forget +4

From an experimental point of view, room temperature ferroelectricity in BiFeO3 is raising many questions. Electric measurements made a long time ago on solid-solutions of BiFeO3 w…

cond-mat.supr-con2003

Phonon dispersion in 1-layer cuprate HgBa2CuO4+d

Matteo D'Astuto, Alessandro Mirone, Paola Giura +3

We investigate the low energy acoustical and optical modes in $HgB a_{2} Cu O_{4 + I^´}$ using inelastic x-ray scattering (IXS). The experimental phonon dispersion and the dynamic…

cond-mat.supr-con2013

Multifractal scaling of flux penetration in the Iron-based Superconductor Ba(Fe $_{0.93}$ Co $_{0.07}$ ) $_{2}$ As $_{2}$

Mathieu Grisolia, Cornelis J. van der Beek, Yanina Fasano +2

The penetration of magnetic flux fronts in the optimally-doped iron-based superconductor Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ ( $x = 0.07 \pm 0.005$ ) is studied by means of magneto-op…

cond-mat.str-el2016

Influence of the surface symmetry breaking on the magnetism, collapsing and three dimensional dispersion of Co pnictides ACo2As2 (A=Ba, Sr, Ca)

Joseph Mansart, Patrick Le Fevre, Francois Bertran +3

We use angle-resolved photoemission to study the three dimensional (3D) electronic structure of Co pnictides ACo2As2 with A=Ba, Sr, Ca or a mixture of Sr and Ca. These compounds ar…

cond-mat.str-el2023

Electronic structure evolution of the magnetic Weyl semimetal Co $_{3}$ Sn $_{2}$ S $_{2}$ with hole and electron doping

Himanshu Lohani, Paul Foulquier, Patrick Le Fevre +4

Co $_{3}$ Sn $_{2}$ S $_{2}$ has been established as a prototype of magnetic Weyl semimetal, exhibiting a ''giant'' anomalous Hall effect in its ferromagnetic phase. An attractive feature of…

cond-mat.str-el2012

Nanoscale textured superconductivity in Ru-substituted BaFe2As2 : a challenge to a universal phase diagram for the pnictides

Yannis Laplace, Julien Bobroff, Veronique Brouet +4

75As NMR experiments were performed in Ba(Fe1-xRux)2As2 for x=0 to 80%. Magnetic fractions and NMR lineshapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) o…