A Boomerang-Shaped Reduction in Interlayer Phase Coherence in Bi₂Sr₂CaCu₂0_8+y with Splayed Columnar Defects

Conference · Sun Mar 01 00:00:00 EST 2009

OSTI ID:979322

Kato, T. ^[1]; Shibauchi, T. ^[1]; Matsuda, Y. ^[1]; Thompson, James R. ^[2]; Krusin-Elbaum, L. ^[3]

---

1. Kyoto University, Japan
2. ORNL
3. IBM T. J. Watson Research Center

We present evidence for entangled solid vortex matter in a glassy state in a layered superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+y} containing randomly splayed linear defects. The interlayer phase coherence(IPC) - probed by the Josephson plasma resonance - is enhanced at high temperatures, reflecting the recoupling of vortex liquid by the defects. At low temperatures in the vortex solid state, the interlayer coherence follows a boomerang-shaped reentrant temperature path with an unusual low field decrease in coherence, indicative of meandering vortices. This behavior suggests strongly suppressed IPC in this system, which may be explained by the vortex entanglement induced by the columnar defects in the 'splayed-glass' state.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 979322
• Resource Relation: Conference: 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25) - Amsterdam, , Netherlands - 8/6/2008 12:00:00 AM-8/13/2008 12:00:00 AM
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DEFECTS
PHYSICS
PLASMA
RESONANCE
SUPERCONDUCTORS
VORTICES