Oscillatory Behavior of Vortex-Lattice Melting Transition Line in Mesoscopic Bi2Sr2CaCu2O8+y Superconductors
S. Ooi, T. Mochiku, M. Tachiki, K. Hirata
DOI 10.1103/PhysRevLett.114.087001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The vortex-lattice melting transition of a limited number of vortices confined in mesoscopic square superconductors was studied by c-axis resistance measurements using stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+y. In contrast to the melting transition in bulk crystals, we have first found a clear oscillatory behavior in the field dependence of the melting temperature in small samples of 5–10 μm square. The periods of the oscillations roughly obey the regularity of the matching conditions of square vortex lattices surrounded by a square boundary and the melting temperatures are enhanced around the vortex number of i2 (where i is an integer). The results suggest that a confinement effect by the square boundary stabilizes square lattice structures which are realized around i2 vortex number even in competition with the favorable Abrikosov triangular lattice in the bulk.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Variation of Tc and transport properties with carrier concentration in Y- and Pb-doped Bi-based superconductors
similarity 0.94P. Mandal et al.
Source status unknown — claims are unverified
Coexistence of Superconductivity and Localization in Bi2Sr2(Caz, Pr1−z)Cu2O8+y
similarity 0.94B. Beschoten et al.
Source status unknown — claims are unverified
Relation between the electronic structure and the superconductivity of cuprates as revealed by Cu 2p photoemission and theoretical investigations
similarity 0.94A. K. Santra et al.
Source status unknown — claims are unverified
Superconducting fluctuation probed by in-plane and out-of-plane conductivities in Tl2Ba2CaCuO8+y single crystals
similarity 0.94Heon-Jung Kim et al.
Source status unknown — claims are unverified
Vortex-motion dissipation in high-Tc superconductors at microwave frequencies
similarity 0.93R. Marcon et al.
Source status unknown — claims are unverified
Electronic states and superconductivity in multilayer high-Tc cuprates
similarity 0.93M. Mori et al.
Source status unknown — claims are unverified