DIRECT VORTEX LATTICE IMAGING AND TUNNELING SPECTROSCOPY OF FLUX LINES ON YBA2CU3O7-DELTA
DIRECT VORTEX LATTICE IMAGING AND TUNNELING SPECTROSCOPY OF FLUX LINES ON YBA2CU3O7-DELTA
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DOI：
10.1103/physrevlett.75.2754
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发表时间：
1995-10-02
影响因子：
8.6
通讯作者：
FISCHER, O
中科院分区：
文献类型：
--
作者：
MAGGIOAPRILE, I;RENNER, C;FISCHER, O
We report the observation of the flux line lattice in YBa2Cu3O7-delta 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 degrees. We also report local tunneling spectroscopy into a vortex con 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.
