Zobrazeno 1 - 10
of 920
pro vyhledávání: '"Benfatto L."'
We present a detailed theoretical investigation of the linear and non-linear optical response in a model system for a disordered d-wave superconductor, showing that for both quantities the gap symmetry considerably changes the paradigm of the optical
Externí odkaz:
http://arxiv.org/abs/2307.07202
Autor:
Mallik, S., Ménard, G., Saïz, G., Witt, H., Lesueur, J., Gloter, A., Benfatto, L., Bibes, M., Bergeal, N.
After almost twenty years of intense work on the celebrated LaAlO3/SrTiO3 system, the recent discovery of a superconducting two-dimensional electron gases (2-DEG) in (111)-oriented KTaO3-based heterostructures injects new momentum to the field of oxi
Externí odkaz:
http://arxiv.org/abs/2204.09094
Publikováno v:
Phys. Rev. Lett. 129, 199701 (2022)
In a recent manuscript Phys. Rev. Lett. 127, 197001 (2021) Puviani et al. claim that the Higgs mode gives an enhancement of the Raman response in the symmetric $A_{1g}$ Raman channel of cuprates. Here we report a series of technical mistakes in their
Externí odkaz:
http://arxiv.org/abs/2203.01804
Publikováno v:
Phys. Rev. Research 4, 023112 (2022)
In a layered and strongly anisotropic superconductor the hybrid modes provided by the propagation of electromagnetic waves in the matter identify two well separate energy scales connected to the large in-plane plasma frequency and to the soft out-of-
Externí odkaz:
http://arxiv.org/abs/2110.06772
Publikováno v:
Phys. Rev. B 103, 014512 (2021)
Recent experiments with strong THz fields in both conventional and unconventional superconductors have clearly evidenced a marked third-harmonic generation below the superconducting temperature $T_c$. Its interpretation challenged substantial theoret
Externí odkaz:
http://arxiv.org/abs/2010.12507
Autor:
Venditti, G., Biscaras, J., Hurand, S., Bergeal, N., Lesueur, J., Dogra, A., Budhani, R. C., Mondal, Mintu, Jesudasan, John, Raychaudhuri, Pratap, Caprara, S., Benfatto, L.
Publikováno v:
Phys. Rev. B 100, 064506 (2019)
One of the hallmarks of the Berezinskii-Kosterlitz-Thouless (BKT) transition in two-dimensional (2D) superconductors is the universal jump of the superfluid density, that can be indirectly probed via the non-linear exponent of the current-voltage $IV
Externí odkaz:
http://arxiv.org/abs/1905.01221
Autor:
Xu, B., Cappelluti, E., Benfatto, L., Mallett, B. P. P., Marsik, P., Sheveleva, E., Lyzwa, F., Wolf, Th., Yang, R., Qiu, X. G., Dai, Y. M., Wen, H. H., Lobo, R. P. S. M., Bernhard, C.
Publikováno v:
Phys. Rev. Lett. 122, 217002 (2019)
By means of infrared spectroscopy we determine the temperature-doping phase diagram of the Fano effect for the in-plane Fe-As stretching mode in Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$. The Fano parameter $1/q^2$, which is a measure of the phonon coupling
Externí odkaz:
http://arxiv.org/abs/1810.10230
Autor:
Singh, G., Jouan, A., Herranz, G., Scigaj, M., Sanchez, F., Benfatto, L., Caprara, S., Grilli, M., Saiz, G., Couedo, F., Feuillet-Palma, C., Lesueur, J., Bergeal, N.
In multiorbital materials, superconductivity can exhibit new exotic forms that include several coupled condensates. In this context, quantum confinement in two-dimensional superconducting oxide interfaces offers new degrees of freedom to engineer the
Externí odkaz:
http://arxiv.org/abs/1806.02212
Publikováno v:
npj Quantum Materials 3 , 56 (2018)
FeSe is an intriguing iron-based superconductor. It presents an unusual nematic state without magnetism and can be tuned to increase the critical superconducting temperature. Recently it has been observed a noteworthy anisotropy of the superconductin
Externí odkaz:
http://arxiv.org/abs/1804.05800
Publikováno v:
Phys. Rev. B 97, 094516 (2018)
In a superconductor the third-harmonic generation (THG) of a strong THz pulse is enhanced below Tc by the resonant excitation of lattice-modulated charge fluctuations (LCF), which modulate the response according to the polarization of the field. Here
Externí odkaz:
http://arxiv.org/abs/1712.01006