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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4571

Title: Surface superconductivity, positive field cooled magnetization, and peak-effect phenomenon observed in a spherical single crystal of niobium
Authors: DAS, P
TOMY, CV
BANERJEE, SS
TAKEYA, H
RAMAKRISHNAN, S
GROVER, AK
Keywords: high-temperature superconductors
flux-line-lattice
neutron-diffraction
ii superconductors
ceramic superconductors
ratio hc3/hc2
nb
phase
transition
Issue Date: 2008
Publisher: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW B, 78(21), -
Abstract: We report the observation of surface superconductivity as well as positive field cooled magnetization, along with peak-effect phenomenon in ac and dc magnetization measurements in a high-purity spherical single crystal of niobium. We study how the surface superconductivity and the positive field cooled magnetization evolve over the field (H) and the temperature (T) phase space. We suggest that the observed evolution in the strength of the positive field cooled magnetization signal may be understood on the basis of the temperature dependence of the superconducting coherence length.
URI: http://dx.doi.org/10.1103/PhysRevB.78.214504
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4571
http://hdl.handle.net/10054/4571
ISSN: 1098-0121
Appears in Collections:Article

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