Atomic-Layer Engineering of Oxide Superconductors

Dye-sensitized and Perovskite Solar Cells: Interface Engineering by Atomic Layer Deposition Inverted Organic Photovoltaic Devices Using Zinc Oxide Nanocomposites as Electron Transporting Layer Materials Kinetic Energy Harvesting

Enhanced Physical Properties Of Indium Tin Oxide Films Grown on Zinc Oxide-Coated Substrates

Structural, electrical and optical properties of indium tin oxide or ITO (In2O3:SnO2) thin films on different substrates are investigated. A 100-nm-thick pre-deposited zinc oxide (ZnO) buffer layer is utilized to simultaneously improve the electrical and optical properties of ITO films. High purity ZnO and ITO layers are deposited with a radio frequency sputtering in argon ambient with plasma p...

Engineering topological superconductors using surface atomic-layer/molecule hybrid materials.

Surface atomic-layer (SAL) superconductors consisting of epitaxially grown metal adatoms on a clean semiconductor surface have been recently established. Compared to conventional metal thin films, they have two important features: (i) space-inversion symmetry-breaking throughout the system and (ii) high sensitivity to surface adsorption of foreign species. These potentially lead to manifestatio...

A Study of High Tc Oxide Superconductors by NQR and NMR Measurements

Since the discovery of high transition temperature (Tc) superconductors [1] many experimental and theoretical studies have been carried out but still the theories are controversial. In the high TC superconductors, magnetism is considered to play an important role. NMR measurements are suitable to investigate both the magnetic and superconducting properties at each atomic site microscopically. I...

Quantitative Predictions of Dead Layers Induced by Surface Roughness in Isotropic Type II Superconductors

In type II superconductors where the coherence length ξ is small compared to the London penetration depth λ, the London equation is valid and it predicts that magnetic fields decay exponentially in magnitude with the depth into the superconductor with a length scale λ, provided the interface is flat. Various direct measurements of λ using low energy μSR on superconductors such as Yttrium-Barium...