Vortex Imaging in the pi-Band of Magnesium Diboride

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dc.creatorEskildsen, M. R.
dc.creatorKugler, M.
dc.creatorTanaka, S.
dc.creatorJun, J.
dc.creatorKazakov, S. M.
dc.creatorKarpinski, J.
dc.creatorFischer, O .
dc.date2002-07-16
dc.date.accessioned2026-07-07T06:29:14Z
dc.date.available2026-07-07T06:29:14Z
dc.descriptionWe report scanning tunneling spectroscopy imaging of the vortex lattice in single crystalline MgB2. By tunneling parallel to the c-axis, a single superconducting gap (Delta = 2.2 meV) associated with the pi-band is observed. The vortices in the pi-band have a large core size compared to estimates based on Hc2, and show an absence of localized states in the core. Furthermore, superconductivity between the vortices is rapidly suppressed by an applied field. These results suggest that superconductivity in the pi-band is, at least partially, induced by the intrinsically superconducting sigma-band.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0207394
dc.identifierhttp://arxiv.org/abs/cond-mat/0207394
dc.identifierPhys. Rev. Lett. 89, 187003 (2002)
dc.identifierdoi:10.1103/PhysRevLett.89.187003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97958
dc.subjectSuperconductivity
dc.titleVortex Imaging in the pi-Band of Magnesium Diboride
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