The highest-temperature superconductors are electronically inhomogeneous at the nanoscale, suggesting the existence of a local variable that could be harnessed to enhance the superconducting pairing. Here we report the relationship between local doping and local strain in the cuprate superconductor Bi(2)Sr(2)CaCu(2)O(8+x). We use scanning tunneling microscopy to discover that the crucial oxygen...

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Giant polarization rotation in a ZnO single crystal was experimentally demonstrated based on a novel phenomenon occurring at the nanometric scale. The ZnO crystal was doped with N(+) and N(2+) ions serving as p-type dopants. By applying an in-plane current using a unique arrangement of electrodes on the device, current-induced polarization rotation of the incident light was observed. From the r...

In this work we aim at understanding the effect of n- and p-type substitutional doping in the case of matrix-embedded and freestanding Si nanocrystals. By means of ab initio calculations we identify the preferential positioning of the dopants and its effect on the structural properties with respect to the undoped case. Subsequently, we consider the case of phosphorus and boron co-doped nanocrys...

Lithium (Li) dopants have garnered attention as a means to enhance hydrogen (H 2 ) binding energies and capacities in 2D boron-based materials. However, it is unclear if how these affect H dissociation chemisorption. Using density functional theory (DFT) nudged elastic band (NEB) calculations, reaction pathways for on borophene-hydride striped-borophene are investigated the presence of Li dopan...

In this research nanoparticles of Ni0.55Zn0.35Cu0.1Fe2O4 were synthesized by sol–gel auto-combustion method. Changes in phase constituents, microstructure and magnetic properties as a result of Zn and Cu additions were evaluated by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), and Vibration Sample Magnetometer (VSM) techniques. XRD results show that the doped sam...

The use of buried dopants to construct quantum-dot cellular automata is investigated as an alternative to conventional electronic devices for information transport and elementary computation. This provides a limit in terms of miniaturization for this type of system as each potential well is formed by a single dopant atom. As an example, phosphorous donors in silicon are found to have good energ...

The atomic-scale impact of dopants at the grain boundary (GB) Li 7 La 3 Zr 2 O 12 solid electrolyte is revealed by first-principles calculation. preferential sites dopants, ion diffusions, interstitial stabilities and phase segregations doped GBs are uncovered.