Anisotropic rescaling of a splayed pinning landscape in hg cuprates: Strong vortex pinning and recovery of variable range hopping

L. Krusin-Elbaum, G. Blatter, J. R. Thompson, D. K. Petrov, R. Wheeler, J. Ullmann, C. W. Chu

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30 引文 斯高帕斯(Scopus)

摘要

Strong vortex pinning by fission-induced uniformly splayed columnar tracks in anisotropic mercury cuprates is demonstrated to result from (re)scaling of the pinning landscape by a large superconducting anisotropy. The effective “narrowing” of the splay distribution restores variable range vortex hopping (VRH) motion expected for nearly parallel pins. VRH emerges as a distinctive peak in the vortex creep rate (∼12% at low fields at T/Tc ∼ 0.5) of the most anisotropic HgBa2 Ca2 Cu3 O8 + δ, a peak well described by a glassy dynamics with the characteristic exponent μ ∼ 1/3.

原文English
頁(從 - 到)3948-3951
頁數4
期刊Physical review letters
81
發行號18
DOIs
出版狀態Published - 1998 11月 2

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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