Anomalies of the Fickian Diffusion During 2D-Decomposition of Superconducting YBa2Cu3O6+X/Y2BaCuO5 Composites
نویسنده
چکیده
Based on a thermodynamic analysis of the relevant experimental data, some anomalies of the diffusion mass-transport during two-dimensional (2D) decompositioning high-temperature superconducting (HTSC) cuprates are considered. Possible mechanism for the manifestation of phase fluctuation-like effects in the HTSC cuprates, especially with respect to the physical properties of melt-textured composites, thin films, coatings, nanomaterials and heterostructures are discussed.
منابع مشابه
Doping Anomalies and Oxygen Vacancies in Underdoped Superconducting Cuprates
Measurements of thermal conductivity (κ) versus temperature and doping for several cuprate superconductors are discussed. Suppressed values of the normalstate κ and the slope change in κ at Tc, observed near 1/8 doping in both YBa2Cu3O6+x and Hg cuprates, are attributed to local lattice distortions and the suppression of the superconducting condensate, respectively. Both phenomena are proposed ...
متن کاملStriped superconductors: How the cuprates intertwine spin, charge and superconducting orders
Recent transport experiments in the original cuprate high temperature superconductor, La2−xBaxCuO4, have revealed a remarkable sequence of transitions and crossovers which give rise to a form of dynamical dimensional reduction, in which a bulk crystal becomes essentially superconducting in two directions while it remains poorly metallic in the third. We identify these phenomena as arising from ...
متن کاملSimulated body fluid and water absorption effects on poly(methyl methacrylate)/hydroxyapatite denture base composites
Poly(methyl methacrylate) (PMMA)/hydroxyapatite (HA) composite has potential application in denture base materials. The denture base materials should exhibit good mechanical properties and dimensional stability in moist environment. Silane coupling agent [3-methacryloxypropyltrimethoxy silane (γ-MPS)] was used to treat the HA fillers in order to enhance the interfacial interaction between the P...
متن کاملAnomalous proximity effect in underdoped YBa2Cu3O6+x josephson junctions
Josephson junctions were photogenerated in underdoped thin films of the YBa2Cu3O6+x family using a near-field scanning optical microscope. The observation of the Josephson effect for separations as large as 100 nm between two wires indicates the existence of an anomalously large proximity effect and shows that the underdoped insulating material in the gap of the junction is readily perturbed in...
متن کاملGCMC Glauber dynamics study for structural transitions in YBCOx (0<x<1), HTc system
We have chosen an Ising ASYNNNI (ASYmmetric Next Nearest Neighbor Interaction) model under a grand canonical regime to investigate structural phase transition from a high symmetric tetragonal (Tet) to a low symmetric orthorhombic in YBa2Cu3O6+x , 0<x<1, HTc system. Ordering process for absorbed oxygens from an external gas bath into the basal plane of the layered system is studied by Monte C...
متن کامل