Low temperature scanning tunneling spectroscopy of Bi2Sr2CaCu2O8

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作者：
机构：
[1] Chen, Qun
[2] Ng, K.-W.
来源：
Chen, Qun | 1600年 / 181期
基金：
美国国家科学基金会;
关键词：
Electrons - Tunneling - Microscopic Examination - Scanning Electron Microscopy - Superconducting Materials - Electronic Properties;
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学科分类号：
摘要：
A low temperature scanning tunneling microscope was used to measure the energy gap of Bi2Sr2CaCu2O8 in the direction perpendicular to the a-b plane. The derivative curve differs significantly from that expected for a Bardeen-Cooper-Schrieffer density of states. No multiple gap features have been observed. The energy gap was consistently measured to be about 21 meV.
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