Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Cea, T."'
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
Autor:
Mesple, F., Missaoui, A., Cea, T., Huder, L., de Laissardière, G. Trambly, Guinea, F., Chapelier, C., Renard, V. T.
Publikováno v:
Phys. Rev. Lett. 127, 126405 (2021)
The moir\'e of twisted graphene bilayers can generate flat bands in which charge carriers do not posses enough kinetic energy to escape Coulomb interactions with each other leading to the formation of novel strongly correlated electronic states. This
Externí odkaz:
http://arxiv.org/abs/2012.02475
Autor:
Ares, P., Cea, T., Holwill, M., Wang, Y. B., Roldan, R., Guinea, F., Andreeva, D. V., Fumagalli, L., Novoselov, K. S., Woods, C. R.
Two-dimensional (2D) hexagonal boron nitride (hBN) is a wide-bandgap van der Waals crystal with a unique combination of properties, including exceptional strength, large oxidation resistance at high temperatures and optical functionalities. Furthermo
Externí odkaz:
http://arxiv.org/abs/1911.09134
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
Autor:
Cea, T., Benfatto, L.
Publikováno v:
Phys. Rev. B 94, 064512 (2016)
The Raman response in a superconductor is a powerful probe to investigate the symmetry of the superconducting gap. Here we show that in a multiband superconductor it also offers the unique opportunity to establish if the driving pairing interaction h
Externí odkaz:
http://arxiv.org/abs/1606.04784
Publikováno v:
Phys. Rev. B 93, 180507 (2016)
The recent observation of a transmitted Thz pulse oscillating at three times the frequency of the incident light paves the way to a new protocol to access resonant excitations in a superconductor. Here we show that this non-linear optical process is
Externí odkaz:
http://arxiv.org/abs/1512.02544
Publikováno v:
Phys. Rev. Lett. 115, 157002 (2015)
Despite the formal analogy with the Higgs particle, the amplitude fluctuations of the order parameter in weakly-coupled superconductors do not identify a real mode with a Lorentz-invariant dynamics. Indeed, its resonance occurs at $2\Delta_0$, which
Externí odkaz:
http://arxiv.org/abs/1503.07733
Autor:
Cea, T., Benfatto, L.
Publikováno v:
Phys. Rev. B 90, 224515 (2014)
We investigate the behavior of the Higgs (amplitude) mode when superconductivity emerges on a preexisting charge-density-wave state. We show that the weak overdamped square-root singularity of the amplitude fluctuations in a standard BCS superconduct
Externí odkaz:
http://arxiv.org/abs/1407.6497
Publikováno v:
Phys. Rev. B 89, 174506 (2014)
According to the Goldstone theorem the breaking of a continuous U(1) symmetry comes along with the existence of low-energy collective modes. In the context of superconductivity these excitations are related to the phase of the superconducting (SC) or
Externí odkaz:
http://arxiv.org/abs/1401.3637
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