Zobrazeno 1 - 10
of 472
pro vyhledávání: '"Gallais, Y"'
Autor:
Mezidi, M., Alekhin, A., Gu, G. D., Colson, D., Houver, S., Cazayous, M., Gallais, Y., Sacuto, A.
Publikováno v:
Physical Review B 106, 174513 (2022)
We followed step by step the transition from an antiferromagnetic (AF) Mott insulator to a superconducting (SC) metal in the Bi$_2$Sr$_2$CaCu$_{2}$O$_{8+\delta}$ (Bi-2212) cuprate using the electronic Raman scattering spectroscopy. This was achieved
Externí odkaz:
http://arxiv.org/abs/2207.10166
Autor:
Philippe, J. -C., Lespinas, A., Faria, J., Forget, A., Colson, D., Houver, S., Cazayous, M., Sacuto, A., Paul, I., Gallais, Y.
Publikováno v:
Phys. Rev. Lett. 129, 187002 (2022)
Anisotropic strain is an external field capable of selectively addressing the role of nematic fluctuations in promoting superconductivity. We demonstrate this using polarization-resolved elasto-Raman scattering to probe the evolution of nematic fluct
Externí odkaz:
http://arxiv.org/abs/2204.12213
Autor:
Philippe, J. -C., Faria, J., Forget, A., Colson, D., Houver, S., Cazayous, M., Sacuto, A., Gallais, Y.
We report a Raman scattering study of nematic degrees of freedom in the iron-based superconductor parent compound BaFe$_2$As$_2$ under tunable uniaxial strain. We demonstrate that the polarization resolved arsenic (As) phonon intensity can be used to
Externí odkaz:
http://arxiv.org/abs/2110.06175
Autor:
Philippe, J. -C., Baptiste, B., Sow, C., Maeno, Y., Forget, A., Colson, D., Cazayous, M., Sacuto, A., Gallais, Y.
Publikováno v:
Phys. Rev. B 103, 235147 (2021)
We report a polarization-resolved Raman spectroscopy study of the orbital dependence of the quasiparticles properties in the prototypical multi-band Fermi liquid Sr\textsubscript{2}RuO\textsubscript{4}. We show that the quasiparticle scattering rate
Externí odkaz:
http://arxiv.org/abs/2103.16698
Exploration of the Hg-based cuprate superconductors by Raman spectroscopy under hydrostatic pressure
Autor:
Auvray, N., Loret, B., Chibani, S., Grasset, R., Guarnelli, Y., Parisiades, P., Forget, A., Colson, D., Cazayous, M., Gallais, Y., Sacuto, Alain
Publikováno v:
Phys. Rev. B 103, 195130 (2021)
The superconducting phase of the $\mathrm{HgBa}_2\mathrm{CuO}_{4+\delta}$ (Hg-1201) and $\mathrm{HgBa}_2\mathrm{Ca}_2\mathrm{Cu}_3\mathrm{O}_{8+\delta}$ (Hg-1223) cuprates has been investigated by Raman spectroscopy under hydrostatic pressure. Our an
Externí odkaz:
http://arxiv.org/abs/2102.13432
Autor:
Beaumont, M. Revelli, Gallais, Y., Sacuto, A., Jacob, K., Valade, L., de Caro, D., Faulmann, C., Cazayous, M.
Publikováno v:
Phys. Rev. B 103, 035139 (2021)
We measured the optical signature of the charge density waves (CDWs) in the multiband conductor TTF[Ni(dmit)2]2 by electronic Raman scattering. At low energies, a hump develops below 60 K. This hump is associated to the amplitude mode of the CDW with
Externí odkaz:
http://arxiv.org/abs/2101.09455
Autor:
Beaumont, M. Revelli, Hemme, P., Gallais, Y., Sacuto, A., Jacob, K., Valade, L., de Caro, D., Faulmann, C., Cazayous, M.
Publikováno v:
J. Phys.: Condens. Matter 33 125403(2021)
K(BEDT-TTF)2Cu(NCS)2 has been investigated by Raman scattering in both bulk and nanoparticle compounds. Phonon modes from 20 to 1600 cm-1 have been assigned. Focusing on the unexplored low frequency phonons, a plateau in frequencies is observed in th
Externí odkaz:
http://arxiv.org/abs/2101.09447
Autor:
Chibani, S., Farina, D., Massat, P., Cazayous, M., Sacuto, A., Urata, T., Tanabe, Y., Tanigaki, K., Böhmer, A. E., Canfield, P. C., Merz, M., Karlsson, S., Strobel, P., Toulemonde, P., Paul, I., Gallais, Y.
Publikováno v:
npj Quantum Materials 6, 37 (2021)
We report the evolution of nematic fluctuations in FeSe$_{1-x}$S$_x$ single crystals as a function of Sulfur content $x$ across the nematic quantum critical point (QCP) $x_c\sim$ 0.17 via Raman scattering. The Raman spectra in the $B_{1g}$ nematic ch
Externí odkaz:
http://arxiv.org/abs/2011.04319
Autor:
Loret, B., Auvray, N., Gu, G. D., Forget, A., Colson, D., Cazayous, M., Gallais, Y., Paul, I., Civelli, M., Sacuto, A.
Publikováno v:
Published In Phyical Review B 101, 214520 (2020)
We report the hole doping dependencies of the pseudogap phase energy scale, $2\Delta_{\rm PG}$, the anti-nodal (nodal) superconducting energy scales $2\Delta^{AN}_{\rm SC}$ ($2\Delta^{N}_{\rm SC}$) and the charge density wave energy scale, $2\Delta_{
Externí odkaz:
http://arxiv.org/abs/2003.08957
Publikováno v:
Phys. Rev. B 101, 085102 (2020)
We report comprehensive temperature and doping-dependences of the Raman scattering spectra for $\mathrm{BaFe_{2}}(\mathrm{As}_{1-x}\mathrm{P}_{x}\mathrm{)_{2}}$ ($x =$ 0, 0.07, 0.24, 0.32, and 0.38), focusing on the nematic fluctuation and the superc
Externí odkaz:
http://arxiv.org/abs/2001.09408