8 papers
Anharmonic lattice dynamics and superconductivity in strained bulk and surface niobium
Mihir Ranjan Sahoo, Roman Lucrezi, Pedro Nunes Ferreira +5
Using first-principles calculations, we investigate how homogeneous strain and crystallographic surface orientation modify the vibrational and superconducting properties of niobium…
First-principles evidence for conventional superconductivity in a quasicrystal approximant
Pedro N. Ferreira, Roman Lucrezi, Sangmin Lee +7
Quasicrystals (QCs) host long-range order without translational symmetry, a regime in which the very foundations of BCS theory are not straightforwardly applicable, yet experiments…
Ambient-pressure 151-K superconductivity in HgBa2Ca2Cu3O8+δ via pressure quench
Liangzi Deng, Thacien Habamahoro, Artin Safezoddeh +10
Superconductivity has been a vigorously researched topic since its discovery in 1911. Raising the superconducting transition temperature (Tc) has been the main driving force behind…
Inverse Isotope Effect in the Ternary Perovskite Hydride SrPdH/D: A Signature of Quantum Zero-Point Fluctuations
Wencheng Lu, Mihir Sahoo, Roman Lucrezi +9
Guided by first-principles calculations, we demonstrate superconductivity in the ternary perovskite hydride SrPdH, synthesized at low pressure. Structural characterization…
High-pressure stabilization of Mg2IrH7: Structural proximity to high-Tc superconductivity
Shubham Sinha, Wencheng Lu, Mads F. Hansen +14
MgIrH is a metastable complex metal hydride with a predicted superconducting transition temperature as high as 170 K at ambient pressure. Following the synthesis of isomorp…
Single layer clathrane: A potential superconducting two-dimensional (2D) hydrogenated metal borocarbide
Xiaoyu Wang, Warren E. Pickett, Matthew N. Julian +2
We propose a new family of two-dimensional (2D) metal-borocarbide clathrane superconductors, derived from three-dimensional (3D) MMBC clathrates. First-principles…