Abstract
Neutron small-angle diffraction has been used to investigate the flux-line lattice structure within single crystals of the high-temperature superconductor Bi2.15Sr1.95CaCu2O8 + x. The diffracted intensity goes rapidly to zero as the magnetic field or the temperature is increased. Melting at low fields as a function of temperature coincides with the appearence of finite resistance within the superconducting state. At low temperatures the diffracted intensity disappears in fields greater than ∼ 70 mT, probably due to the decomposition of the flux-line lattice into randomly pinned 2d "pancake" vortices.
Original language | English |
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Pages (from-to) | 107-109 |
Number of pages | 3 |
Journal | Physica B: Physics of Condensed Matter |
Volume | 213-214 |
Issue number | C |
DOIs | |
Publication status | Published - 1 Aug 1995 |