2002/03/29 by V. Ta Phuoc, Phuoc, V. Ta, E. Olive +11
Engineering · Physics and Astronomy · #Magnetic Field Sensors Techniques #Magneto-Optical Properties and Applications #Physics of Superconductivity and Magnetism #cond-mat.dis-nn #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0203617
4 pages, 5 figures, accepted for publication in Phys. Rev. Lett
arxiv created 2002/03/29 · arxiv updated 2009/11/30
The transverse Meissner effect (TME) in the highly layered superconductor Bi2Sr2CaCu2O8+y with columnar defects is investigated by transport measurements. We present detailed evidence for the persistence of the Bose glass phase for H⊥<H⊥ c : (i) the variable-range vortex hopping process for low currents crosses over to the half-loops regime for high currents; (ii) in both regimes near H⊥ c the energy barriers vanish linearly with H⊥ ; (iii) the transition temperature is governed by TBG(H∥,0) -TBG(H∥,H⊥) ∼ |H⊥| ^1/ν⊥ with ν⊥=1.0 ± 0.1. Furthermore, above the transition as H⊥→ H⊥ c+, moving kink chains consistent with a commensurate-incommensurate transition scenario are observed. These results thereby clearly show the existence of the TME for H⊥<H⊥ c .