Flux-line lock-in to CuO planes in a La{sub 1.9}Sr{sub 0.1}CuO{sub 4} single crystal

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.5610· OSTI ID:550400

Bugoslavsky, Y V; Zhukov, A A; Perkins, G K; Caplin, A D ^[1]; Kojima, H; Tanaka, I ^[2]

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1. Centre for High Temperature Superconductivity, Blackett Laboratory, Imperial College, London SW7 2BZ (United Kingdom)
2. Institute of Inorganic Synthesis, Faculty of Engineering, Yamanashi University, Miyamae 7, Kofu, Yamanashi 400 (Japan)

We report on vector magnetization studies of a La{sub 1.9}Sr{sub 0.1}CuO{sub 4} single crystal, cut in the form of a disk with the anisotropy (c) axis parallel to the disk plane. We observe a sharp threshold in the angular dependences of the isothermal remanent magnetization. When the magnetic field is applied within a threshold angle to the ab plane, the remanent moment is strictly parallel to ab, and also the c-axis component of magnetization is reversible. The threshold angle scales with temperature in the same manner as the lower critical field parallel to the c axis, H{sub c1}{sup c}. These observations give direct support to the presence of a vortex lock-in transition to the CuO planes in our crystal. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550400
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 9 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
MAGNETIC FLUX
MAGNETIC MOMENTS
MAGNETIZATION
STRONTIUM OXIDES