ISSN:
1573-7357
Keywords:
74.60.Ge
;
71.20.−b
;
74.50.+r
;
74.72.Bk
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Scanning Tunneling Spectroscopy (STS) measurements have been carried out on the high Tc superconductor (HTS) YBa2Cu3O7−δ (YBCO). Using very high quality single crystals as well as hard tips, we obtained differential conductance spectra which showed various conductance features in agreement with other spectroscopic techniques. The reproducibility of our spectra allowed us to map for the first time the vortex lattice on a HTS using a STS technique1. The vortices are arranged in a short range order oblique lattice, while the cores of the flux lines show an anisotropic shape. These observations can be related to the in-plane anisotropy of YBCO.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00753851
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