Chemical Processing of High Temperature Oxide Superconductors (I)

Normal state of the copper oxide high-temperature superconductors.

Electronic phase diagram of high-temperature copper oxide superconductors.

In order to understand the origin of high-temperature superconductivity in copper oxides, we must understand the normal state from which it emerges. Here, we examine the evolution of the normal state electronic excitations with temperature and carrier concentration in Bi(2)Sr(2)CaCu(2)O(8+δ) using angle-resolved photoemission. In contrast to conventional superconductors, where there is a single...

I-V characteristics of high-temperature superconductors with columnar defects.

The vortex glass transition in the presence of columnar defects is studied by Monte Carlo simulations of a vortex loop model, suggested by the analogy to the T = 0 superconductor-insulator transition for dirty bosons in (2+1)D. From finite-size scaling analysis of the I-V characteristic we find two dynamical exponents describing the non-equilibrium behavior. We obtain z⊥ = 6±0.5 and z‖ = 4 ± 0....

Prediction of decoupling in high-temperature superconductors.

Tlc variation of nagn.rization wirh ficld in high-icmFr.turc suFrconductors pas calculat.d by cxtcnding thc spin-8tair modcl of Ebn€r and Srroud lC. Ebocr and D. Stroud, phvs. Rcv. B il. 165 (1965)l to incorporalc domains insid! thc Srains. Trro couplin8 .n.r8i.3 wcrc urcd, one bcrwen domains in rhc sinc grain, and a ficld{.pc.dcnt coupli,g cocrgy bcrw.c'l domars tn ditr rcnt trains. Thc 6cld d...

Designed 3D architectures of high-temperature superconductors.

Self-supporting superconducting replicas of pasta shapes are reported, yielding products of differing 3D architectures. Functioning high-temperature superconductor wires are developed and refined from replicas of spaghetti, demonstrating a unique sol-gel processing technique for the design and synthesis of novel macroscopic morphologies of complex functional materials.