Vortex Lattice Instabilities in YBa2Cu3O7-x Nanowires

Vortex Lattice Instabilities in YBa2Cu3O7-x Nanowires

High-resolution focused ion beam lithography has been used to fabricate YBa₂Cu₃O7-x (YBCO) wires with nanometric lateral dimensions. In the present work, we investigate Flux-flow instabilities in nanowires of different widths, showing sudden voltage switching jumps from the superconducting to the normal state. We present an extensive study on the temperature and field dependence of the switchin...

Vortex lattice structures in YBa2Cu3O7

We describe small-angle neutron scattering (SANS) studies of vortex structures in the high Tc superconductor YBazCu307 in the mixed state. The SANS technique is a unique tool for probing the crystallography of a flux line arrangement in the bulk sample that can measure the values of the characteristic lengths and the effect of defects on lattice arrangement and orientation extremely accurately....

Theoretical study of lattice instabilities in YBa2Cu3O7.

NMR and Vortex Lattice Melting in YBa2Cu3O7

Observation of Vortex Lattice Related Anomalies in Polycrystalline YBa2Cu3O7-x Near the Superconducting Transition

The d.c. I-V characteristic of polycrystalline YBa2Cu3O7−x high temperature superconductors (HTSC) is measured near the transition temperature (Tc). The Tc was found to be 90 K with a width of 2 K. The voltage was measured at various current values and with reversing the current. A difference in voltage was found for forward and reverse current directions near Tc. The observed directionality of...