Imaging and identification of atomic planes of cleavedBi2Sr2CaCu2O8+&dgr;by high resolution scanning tunneling microscopy
作者:
S. H. Pan,
E. W. Hudson,
J. Ma,
J. C. Davis,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 1
页码: 58-60
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.121722
出版商: AIP
数据来源: AIP
摘要:
Imaging of the surface of a cleavedBi2Sr2CaCu2O8+&dgr;(BSCCO) single crystal with a scanning tunneling microscope reveals a series of repeating terraces, whose separations are then used to identify the atomic planes which are exposed. On each of the exposed planes, the incommensurate modulation is also clearly resolved with atomic resolution. The measured separations between the terraces lead to the deduction that any atomic layer can be exposed by mechanical cleavage of BSCCO. We, therefore, suggest that the identity of atomic planes, and the direction of tunneling, should always be taken into consideration when interpreting tunneling spectra obtained on such cleaved BSCCO crystals. ©1998 American Institute of Physics.
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