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Low-energy structures in vortex core tunneling spectra in Bi2Sr2CaCu2O8+δ

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Published in Physica C: Superconductivity and Its Applications. 2000, vol. 332, no. 1-4, p. 440-444
Abstract Scanning tunneling spectroscopy allows us to study the changes in the quasiparticle local density of states due to the presence of vortex cores in Bi2Sr2CaCu2O8+δ (BSCCO). The vortex core spectra are characterized by a gap-like structure similar to the pseudogap measured above Tc. We also observe small spectral structures inside the gap in the vortex cores. The observed low-energy structures are weaker than what one expects for localized quasiparticle excitations.
Keywords Scanning tunneling spectroscopyMixed stateLow-energy structures
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HOOGENBOOM, Bart Wiebren et al. Low-energy structures in vortex core tunneling spectra in Bi2Sr2CaCu2O8+δ. In: Physica C: Superconductivity and Its Applications, 2000, vol. 332, n° 1-4, p. 440-444. https://archive-ouverte.unige.ch/unige:35914

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Deposited on : 2014-04-22

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