Observation of large anisotropy in c-axis oriented thin films of MgB$_{2}$ prepared by an in situ pulsed laser deposition process

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dc.creatorShinde, S. R.
dc.creatorOgale, S. B.
dc.creatorBiswas, A.
dc.creatorGreene, R. L.
dc.creatorVenkatesan, T.
dc.date2001-10-25
dc.date.accessioned2026-07-07T02:43:17Z
dc.date.available2026-07-07T02:43:17Z
dc.descriptionA large anisotropy in the upper critical field (H$_{C2}$) is observed for MgB$_{2}$ films grown in situ by a pulsed laser deposition process involving growth and annealing of Mg and B multilayers. Measurements of resistivity as a function of temperature and magnetic field yield the estimated zero temperature values of H$_{C2}$ in the range 100 to 130 T and about 10 T, for the field in ab plane and along c axis, respectively, depending on the criterion chosen for the transition temperature. The corresponding anisotropy parameter is thus in the range 9 to 13. The estimated coherence length in ab plane is about 50 Å, whereas that in the c direction is much smaller (\approx 5 Å). No significant magnetoresistance is observed in the normal state.
dc.descriptionSubmitted to Phys. Rev B
dc.identifierhttps://arxiv.org/abs/cond-mat/0110541
dc.identifierhttp://arxiv.org/abs/cond-mat/0110541
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18438
dc.subjectSuperconductivity
dc.titleObservation of large anisotropy in c-axis oriented thin films of MgB$_{2}$ prepared by an in situ pulsed laser deposition process
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