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Now showing items 702-721 of 989
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Quantum anharmonic enhancement of superconductivity in P63/mmc ScH6 at high pressures: A first-principles study
Hou, Pugeng; Belli, Francesco; Bianco, Raffaello; Errea Lope, Ion
(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 ... -
Quantum crystal structure in the 250-kelvin superconducting lanthanum hydride
Errea Lope, Ion; Belli, Francesco; Monacelli, Lorenzo; Sanna, Antonio; Koretsune, Takashi; Tadano, Terumasa; Bianco, Raffaello; Calandra, Matteo; Arita, Ryotaro; Mauri, Francesco; Flores-Livas, Jose A. (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 ... -
Quantum Memristors in Frequency-Entangled Optical Fields
González Raya, Tasio; Lukens, Joseph M.; Céleri, Lucas C.; Sanz Ruiz, Mikel (MDPI, 2020-02-14)
A quantum memristor is a passive resistive circuit element with memory, engineered in a given quantum platform. It can be represented by a quantum system coupled to a dissipative environment, in which a system–bath ... -
Quantum Simulation of Dissipative Processes without Reservoir Engineering
Di Candia, Roberto; Simón Pedernales, Julen Jon; Del Campo, Adolfo; Solano Villanueva, Enrique Leónidas; (Nature Publishing Group, 2015-05-29)
We present a quantum algorithm to simulate general finite dimensional Lindblad master equations without the requirement of engineering the system-environment interactions. The proposed method is able to simulate both ... -
Quantum Simulator for Transport Phenomena in Fluid Flows
Mezzacapo, Antonio; Sanz Ruiz, Mikel; Lamata Manuel, Lucas ; Egusquiza Egusquiza, Iñigo Luis; S. Succi; Solano Villanueva, Enrique Leónidas (Nature Publishing Group, 2015-08-17)
Transport phenomena still stand as one of the most challenging problems in computational physics. By exploiting the analogies between Dirac and lattice Boltzmann equations, we develop a quantum simulator based on ... -
Quantum structural fluxion in superconducting lanthanum polyhydride
; ; Errea Lope, Ion; ; ; ; ; ; (Nature Communications, 2023-03-25)
The discovery of 250-kelvin superconducting lanthanum polyhydride under high pressure marked a significant advance toward the realization of a room‐temperature superconductor. X-ray diffraction (XRD) studies reveal a ... -
Quartz chemistry of granitic pegmatites: Implications for classification, genesis and exploration
Müller, Axel; Keyser, William; Simmons, William B.; Webber, Karen L.; Wise, Michael; Beurlen, Hartmut; Garate Olave, Idoia; Roda Robles, María Encarnación; (Elsevier, 2021-12-05)
[EN]Quartz from 254 pegmatites representing eight pegmatite fields and provinces worldwide was investigated by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) to determine concentrations of trace ... -
Radiological characterisation in view of nuclear reactor decommissioning: On-site benchmarking exercise of a biological shield
; Boden, Sven; Völgyesi, Péter; ; Broeckx, Wouter; Ruiz González, Jesús; Otiougova, Polina; Klix, Axel; Leong, Lou Sai; Hlavathy, Zoltán; Almási, István; Amgarou, Khalil; Crozet, Marielle; Legarda Ibañez, Fernando (Elsevier Ltd., 2021-04-28)
[EN] Nearly all decommissioning and dismantling (D&D) projects are steered by the characterisation of the plant being dismantled. This radiological characterisation is a complex process that is updated and modified during ... -
Rational design of an unusual 2D-MOF based on Cu(I) and 4-hydroxypyrimidine-5-carbonitrile as linker with conductive capabilities: a theoretical approach based on high-pressure XRD
(Royal Society Of Chemistry, 2020-08-25)Herein, we present, for the first time, a 2D-MOF based on copper and 4-hydroxypyrimidine-5-carbonitrile as the linker. Each MOF layer is perfectly flat and neutral, as is the case for graphene. High pressure X-ray diffraction ... -
Real space manifestations of coherent screening in atomic scale Kondo lattices
Moro Lagares, María; Korytár, Richard; Piantek, Marten; Robles Rodríguez, Roberto; Lorente Palacios, Nicolás; Pascual Chico, José Ignacio; Ibarra García, Manuel Ricardo; Serrate Donoso, David (Nature Publishing, 2019-06-17)
The interaction among magnetic moments screened by conduction electrons drives quantum phase transitions between magnetically ordered and heavy-fermion ground states. Here, starting from isolated magnetic impurities in the ... -
Real-Time Dynamics in U(1) Lattice Gauge Theories with Tensor Networks
Pichler, T.; Dalmonte, M.; Rico Ortega, Enrique; Zoller, P.; Montangero, S. (American Physical Society, 2016-03-03)
Tensor network algorithms provide a suitable route for tackling real-time-dependent problems in lattice gauge theories, enabling the investigation of out-of-equilibrium dynamics. We analyze a U(1) lattice gauge theory in ... -
Real-Time Propagation TDDFT and Density Analysis for Exciton Coupling Calculations in Large Systems
(American Chemical Society, 2019-06)Photoactive systems are characterized by their capacity to absorb the energy of light and transform it. Usually, more than one chromophore is involved in the light absorption and excitation transport processes in complex ... -
Realization of nearly dispersionless bands with strong orbital anisotropy from destructive interference in twisted bilayer MoS2
(Nature Research, 2021-09)[EN]Recently, the twist angle between adjacent sheets of stacked van der Waals materials emerged as a new knob to engineer correlated states of matter in two-dimensional heterostructures in a controlled manner, giving rise ... -
Recent advances and future perspectives on porous materials for biomedical applications
; Sanz Iturralde, Oihane; ; ; (Future Medicine Ltd, 2022-01-13)
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Recent Applications of the Successive Self-nucleation and Annealing (SSA) Thermal Fractionation Technique
; ; Müller Sánchez, Alejandro Jesús (Frontiers Media S.A., 2022-09-28)
Successive Self-nucleation and Annealing (SSA) is a thermal fractionation technique that is performed by Differential Scanning Calorimetry (DSC). The combination of non-isothermal and isothermal steps applied during SSA ... -
Recommendations for the selection of in situ measurement techniques for radiological characterization in nuclear/radiological installations under decommissioning and dismantling processes
(Elsevier Ltd., 2021-04-30)[EN] In this paper, in-situ radiological characterisation by means of non-destructive techniques is studied and analysed in the context of the different constrained environments (identified as radioactivity, materials, ... -
Reconciling global-model estimates and country reporting of anthropogenic forest CO 2 sinks
(Springer, 2018)Achieving the long-term temperature goal of the Paris Agreement requires forest-based mitigation. Collective progress towards this goal will be assessed by the Paris Agreement s Global stocktake. At present, there is a ... -
Reduced Carbon Monoxide Saturation Coverage on Vicinal Palladium Surfaces: the Importance of the Adsorption Site
García Martínez, Fernando; Dietze, Elisabeth; Schiller, Frederik; Gajdek, Dorotea; Merte, Lindsay R.; Gericke, Sabrina M.; Zetterberg, Johan; Albertin, Stefano; Lundgren, Edvin; Gronbeck, Henrik; Ortega Conejero, José Enrique (American Chemical Society, 2021-10-07)
[EN]Steps at metal surfaces may influence energetics and kinetics of catalytic reactions in unexpected ways. Here, we report a significant reduction of the CO saturation coverage in Pd vicinal surfaces, which in turn is ... -
Reducing Passive Drug Diffusion from Electrophoretic DrugDelivery Devices through Co-Ion Engineering
(Wiley, 2021-06)Implantable electrophoretic drug delivery devices have shown promise for applications ranging from treating pathologies such as epilepsy and cancer to regulating plant physiology. Upon applying a voltage, the devices ... -
Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
Zapata Arteaga, Osnat; Perevedentsev, Aleksandr; Marina Barbier, Sara Luisa; Martín Pérez, Jaime; Sebastián Reparaz, Juan; Campoy Quiles, Mariano (American Chemical Society, 2020-09-11)
Here we show that molecular doping of polymer thermoelectrics increases the electrical conductivity while reducing the thermal conductivity. A high-throughput methodology based on annealing and doping gradients within ...