Temperature dependence of transport spin polarization in NdNi5 measured using Point Contact Andreev reflection

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dc.creatorMukhopadhyay, Sourin
dc.creatorRaychaudhuri, Pratap
dc.creatorJoshi, Devang A.
dc.creatorTomy, C. V.
dc.date2006-08-09
dc.date2006-08-11
dc.date.accessioned2026-07-07T07:38:39Z
dc.date.available2026-07-07T07:38:39Z
dc.descriptionWe report a study in which Point contact Andreev reflection (PCAR) spectroscopy using superconducting Nb tip has been carried out on NdNi5, a ferromagnet with a Curie temperature of TC~7.7K. The measurements were carried out over a temperature range of 2-9K which spans across the ferromagnetic transition temperature. From an analysis of the spectra, we show that (i) the temperature dependence of the extracted value of transport spin polarization closely follows the temperature dependence of the spontaneous magnetization; (ii) the superconducting quasiparticle lifetime shows a large decrease close to the Curie temperature of the ferromagnet. We attribute the latter to the presence of strong ferromagnetic spin fluctuations in the ferromagnet close to the ferromagnetic transition temperature.
dc.descriptionpdf file including figures-Typographical error and errors in references corrected
dc.identifierhttps://arxiv.org/abs/cond-mat/0608214
dc.identifierhttp://arxiv.org/abs/cond-mat/0608214
dc.identifierPHYSICAL REVIEW B 75, 014504 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.014504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121167
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleTemperature dependence of transport spin polarization in NdNi5 measured using Point Contact Andreev reflection
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