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Students’understanding of the concept of the electric field through conversions of multiple representations
(American Physical Society, 2020-06-04)
We conducted a study with introductory and upper-division level physics students in a Mexican and a Spanish university to learn how students recognize the main characteristics of the electric field in three of its more ...
Klein paradox for bosons, wave packets and negative tunnelling times
(Nature, 2020-11-05)
We analyse a little known aspect of the Klein paradox. A Klein-Gordon boson appears to be able to cross a supercritical rectangular barrier without being reflected, while spending there a negative amount of time. The ...
Nanofocusing of acoustic graphene plasmon polaritons for enhancing mid-infrared molecular fingerprints
(De Gruyter, 2020)
Mid-infrared (mid-IR) optical spectroscopy of molecules is of large interest in physics, chemistry, and biology. However, probing nanometric volumes of molecules is challenging because of the strong mismatch of their ...
Guiding students towards an understanding of the electromotive force conceptin electromagnetic phenomena through a teaching-learning sequence
(American Physical Society, 2020-08-03)
In this work we present the application of design based research (DBR) methodology to conduct a systematic iterative study of the design and implementation of a teaching-learning sequence (TLS) on emf (electromotive force). ...
Reflecting Laser-Driven Shocks in Diamond in the Megabar Pressure Range
(Chinese Laser Press and Cambridge University Press, 2021-01-08)
In this work we present experimental results on the behavior of diamond at megabar pressure. The experiment was performed using the PHELIX facility at GSI in Germany to launch a planar shock into solid multi-layered diamond ...
The stochastic self-consistent harmonic approximation: calculating vibrational properties of materials with full quantum and anharmonic effects
(IOP Publishing Ltd, 2021-07-13)
[EN] The efficient and accurate calculation of how ionic quantum and thermal fluctuations impact
the free energy of a crystal, its atomic structure, and phonon spectrum is one of the main
challenges of solid state physics, ...
Quantum anharmonic enhancement of superconductivity in P63/mmc ScH6 at high pressures: A first-principles study
(AIP Publishing, 2021-11-05)
Making use of first-principles calculations, we analyze the effect of quantum ionic fluctuations and lattice anharmonicity on the crystal structure and superconductivity of P63/mmc ScH6 in the 100–160 GPa pressure range ...
Generation of laser-driven shocks and their use to study simple compounds at high pressure
(2021-12-15)
El conocimiento profundo y la comprensión de la ecuación de estado de materiales simples como el carbono y el agua en el régimen de materia densa cálida (WDM) es esencial para el modelado de la estructura interna de muchos ...
Black metal hydrogen above 360 GPa driven by proton quantum fluctuations
(Nature Physics, 2020-09-07)
Hydrogen metallization under stable conditions is a major quest for realizing the first room temperature su-
perconductor. Recent low-temperature experiments report different metallization pressures, varying from 360GPa ...
Quantum crystal structure in the 250-kelvin superconducting lanthanum hydride
(Springer Nature, 2020-02-05)
The discovery of superconductivity at 200 kelvin in the hydrogen sulfide system at high pressures demonstrated the potential of hydrogen-rich materials as high-temperature superconductors. Recent theoretical predictions ...