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Direct Vortex Lattice Imaging and Tunneling Spectroscopy of Flux Lines on YBa2Cu3O7-δ

Published inPhysical Review Letters, vol. 75, no. 14, p. 2754-2757
Publication date1995
Abstract

We report the observation of the flux line lattice in YBa2Cu3O7−δ by scanning tunneling microscopy. The measurements were carried out at 4.2 K and in a magnetic field of 6 T applied along the c axis. The vortices appear arranged in an oblique lattice in which the primitive vectors are nearly equal and form an angle of approximately 77°. We also report local tunneling spectroscopy into a vortex core which reveals two peaks separated by about 11 meV. The zero-field spectra are reproducible over large areas of the sample and show a multiple peak structure.

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Citation (ISO format)
MAGGIO-APRILE, Ivan et al. Direct Vortex Lattice Imaging and Tunneling Spectroscopy of Flux Lines on YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>. In: Physical Review Letters, 1995, vol. 75, n° 14, p. 2754–2757. doi: 10.1103/PhysRevLett.75.2754
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ISSN of the journal0031-9007
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