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Surface superconductivity, positive field cooled magnetization, and peak-effect phenomenon observed in a spherical single crystal of niobium

DSpace at IIT Bombay

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Title Surface superconductivity, positive field cooled magnetization, and peak-effect phenomenon observed in a spherical single crystal of niobium
 
Creator DAS, P
TOMY, CV
BANERJEE, SS
TAKEYA, H
RAMAKRISHNAN, S
GROVER, AK
 
Subject high-temperature superconductors
flux-line-lattice
neutron-diffraction
ii superconductors
ceramic superconductors
ratio hc3/hc2
nb
phase
transition
coherence length
magnetic cooling
niobium
type ii superconductors
 
Description 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.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-17T00:29:04Z
2011-12-26T12:50:02Z
2011-12-27T05:35:57Z
2011-07-17T00:29:04Z
2011-12-26T12:50:02Z
2011-12-27T05:35:57Z
2008
 
Type Article
 
Identifier PHYSICAL REVIEW B, 78(21), -
1098-0121
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
 
Language en