Ultrahigh vacuum STM/STS studies of the Bi-O surface in Bi2Sr2CuOy single crystals

✍ Scribed by Kazuto Ikeda; Izumi Tomeno; Kenshi Takamuku; Koji Yamaguchi; Rittaporn Itti; Naoki Koshizuka

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 337 KB
• Volume: 191
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(92)90948-c

✦ Synopsis

Scanning tunneling microscopic and spectroscopic studies were made on cleaved surfaces of Bi,Sr2CuOy single crystals using an ultrahigh-vacuum scanning tunneling microscope (UHV-STM). The modulation structures o~ ~.bc 8i-O surface were observed at room temperature with atomic resolution. The tunneling spectra showed electronic gap structures similar to those observed for the Bi-O surface of superconducting Bi-2212 single crystals. This suggests that superconductivity is not directly related to the electronic structure observed in the Bi-O plane.