Vortex-matter phase diagram in YBa2Cu3Oy

Abstract

Due to an error during the printing process, many ofthe figures in this paper were printed incorrectly, despiteappearing correctly in the proofs that were checked by theauthors and passed for press. All the figures from this paper are reprinted correctlybelow.Figure 1. The temperature dependence of the resistivity for untwinned YBa2Cu3Oy at various magnetic fields (H||c axis). Magnetic field increases from right to left. Inset, the field dependence of the resistivity around Hm(T) with hysteresis subloop.Figure 2. Magnetization as a function of temperature in ZFC and FCC modes at 5 T for untwinned YBa2Cu3Oy. The inset is an expanded view of the magnetization and the jump in the magnetization μ0(M - Ms) near the vortex-lattice melting temperature.Figure 3. The inverse logarithmic derivative of the resistivity near the vortex-glass transition temperature Tg for untwinned YBa2Cu3Oy. Inset, the temperature dependence of the resistivity above (broken curves) and below (full curves) the critical point.Figure 4. Magnetization curves at various temperatures for untwinned YBa2Cu3Oy. Inset, the field derivative dM/dH shows a sharp peak at a characteristic field H*.Figure 5. The magnetic-field dependence of the critical current density Jc for untwinned YBa2Cu3Oy at several temperatures.Figure 6. The magnetic-field dependence of the critical current density Jc for both untwinned and heavy-twinned YBa2Cu3Oy at 58, 63, and 70 K.Figure 7. The vortex-matter phase diagram in untwinned YBa2Cu3Oy. The transition lines Tm(H), Tg(H), and H*(T) terminate at the critical point and divide into three different phases of the vortex liquid, the vortex glass, and the Bragg glass. The full curve is a fit to the field-driven transition line Bdis(T).Figure 8. Magnetization curves of untwinned YBa2Cu3Oy before and after electron irradiation with different irradiation doses for different temperatures: (a) T < Tcp and (b) T≃Tcp. Inset, T>Tcp.Figure 9. The magnetic-field dependence of the critical current density Jc for untwinned YBa2Cu3Oy before and after electron irradiation.Figure 10. (a) Normalized resistivity against temperature in untwinned YBa2Cu3Oy before and after electron irradiation. (b) The inverse logarithmic derivative of the resistivity at 13 T in the vicinity of the vortex-glass transition temperature Tg. Inset, the reduced temperature dependence of the activation energy at 13 T.Figure 11. The vortex-matter phase diagram in untwinned YBa2Cu3Oy before and after electron irradiation. The three different phases, i.e., the vortex liquid, the vortex glass, and the Bragg glass, are divided by transition lines Hm(T), Hg(T), and H*(T). The full curves are fits to the field-driven transition line Bdis(T).