6 papers
Amorphous Boron Nitride: Ab initio Study of its vibrational properties
David Hinojosa-Romero, Alexander Valladares, Renela M. Valladares +2
Boron nitride (BN) is a structurally versatile insulator since it can be found in several crystalline structures with interesting mechanical and electrical properties, making this…
Short-range Atomic Topology of Ab initio Generated Amorphous PdSi Alloys
Isaías Rodríguez-Aguirre, Renela M. Valladares, Alexander Valladares +2
Since the pioneering efforts of Duwez and coworkers in 1965, when a solid amorphous phase of Pd-Si (-PdSi) was obtained in the vicinity of the eutectic concentration, much work…
\textit{Ab initio} Studies of Magnetism and Topology in solid Pd-rich a-PdSi Alloys
Isaías Rodríguez, Renela M. Valladares, Alexander Valladares +2
In 1965 Duwez \textit{et al.} reported having generated an amorphous, stable phase of palladium-silicon in the region 15 to 23 atomic percent (at. \%) silicon. These pioneering eff…
Superconductivity versus magnetism in the palladium 'ides': Pd(H/D/T)
Isaías Rodríguez, Renela M. Valladares, Alexander Valladares +2
In general, conventional superconductivity and magnetism are competing phenomena. In some alloys this competition is a function of the concentration of the elements. Here we show t…
A facile approach to calculating superconducting transition temperatures in the bismuth solid phases
Isaías Rodríguez, David Hinojosa-Romero, Alexander Valladares +2
All solid phases of bismuth under pressure, but one, have been experimentally found to superconduct. From Bi-I to Bi-V, avoiding Bi-IV, they become superconductors and perhaps Bi-I…
Superconductivity in the solid phases of Bi. Is Bi-IV a superconductor?
Ariel A. Valladares, Isaias Rodriguez, David Hinojosa-Romero +2
The first successful theory of superconductivity was the one proposed by Bardeen, Cooper and Schrieffer in 1957. This breakthrough fostered a remarkable growth of the field that pr…