Zobrazeno 1 - 10
of 769
pro vyhledávání: '"A. SACUTO"'
Autor:
M. Verseils, P. Hemme, D. Bounoua, R. Cervasio, J-B. Brubach, S. Houver, Y. Gallais, A. Sacuto, D. Colson, T. Iijima, M. Mochizuki, P. Roy, M. Cazayous
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-7 (2023)
Abstract Electromagnons (Electroactive spin wave excitations) could prove to be decisive in information technologies but they remain fragile quantum objects, mainly existing at low temperatures. Any future technological application requires overcomin
Externí odkaz:
https://doaj.org/article/2535cc50f9b54ea8b66efcc652953cb5
Autor:
S. Chibani, D. Farina, P. Massat, M. Cazayous, A. Sacuto, T. Urata, Y. Tanabe, K. Tanigaki, A. E. Böhmer, P. C. Canfield, M. Merz, S. Karlsson, P. Strobel, P. Toulemonde, I. Paul, Y. Gallais
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)
Abstract We report the evolution of nematic fluctuations in FeSe1−x S x single crystals as a function of Sulfur content x across the nematic quantum critical point (QCP) x c ~ 0.17 via Raman scattering. The Raman spectra in the B 1g nematic channel
Externí odkaz:
https://doaj.org/article/35745c90ce6a4938948a39f74b9de131
Autor:
N. Auvray, B. Loret, S. Benhabib, M. Cazayous, R. D. Zhong, J. Schneeloch, G. D. Gu, A. Forget, D. Colson, I. Paul, A. Sacuto, Y. Gallais
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Solid evidence of quantum fluctuations associated to a quantum critical point in cuprate superconductors remains elusive. Here, Auvray et al. report Raman scattering evidence of enhanced electronic nematic fluctuations near the endpoint of the pseudo
Externí odkaz:
https://doaj.org/article/413a8ca19350488696f400962a9da73f
Publikováno v:
Phys. Rev. B 108, 165111 (2023)
We study the Raman response, for $B_{1g}$ and $B_{2g}$ light-polarization symmetries, of the charge density wave phase appearing in the underdoped region of cuprate superconductors. We show that the $B_{2g}$ response provides a distinctive signature
Externí odkaz:
http://arxiv.org/abs/2305.11688
Autor:
Katsumi, Kota, Alekhin, Alexandr, Souliou, Sofia-Michaela, Merz, Michael, Haghighirad, Amir-Abbas, Tacon, Matthieu Le, Houver, Sarah, Cazayous, Maximilien, Sacuto, Alain, Gallais, Yann
Publikováno v:
Physical Review Letters 130, 106904 (2023)
Ta$_2$NiSe$_5$ is an excitonic insulator candidate showing the semiconductor/semimetal-to-insulator (SI) transition below $T_{\text{c}}$ = 326 K. However, since a structural transition accompanies the SI transition, deciphering the role of electronic
Externí odkaz:
http://arxiv.org/abs/2211.08537
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:
Hemme, Pierre, Djemia, Philippe, Rovillain, Pauline, Gallais, Yann, Sacuto, Alain, Forget, Anne, Colson, Dorothée, Charron, Eric, Perrin, Bernard, Belliard, Laurent, Cazayous, Maximilien
Publikováno v:
J. Phys.: Condens. Matter 33, 495402 (2021)
Time resolved pump and probe acoustics and first-principles calculations were employed to assess elastic properties of the TbMnO3 perovskite manganite having orthorhombic symmetry. Measuring sound velocities of bulk longitudinal and shear acoustic wa
Externí odkaz:
http://arxiv.org/abs/2109.15023
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