Scanning tunneling microscopy and spectroscopy studies of the surface structure and electronic properties of single-crystal Tl-Ba-Ca-Cu-O superconductors
Journal Article
·
· Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States)
- Columbia Univ., NY (United States)
- Sandia National Labs., Albuquerque, NM (United States)
The use of scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) to characterize the surface structure and electronic properties of Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} and Tl{sub 2}Ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} single crystals is described in this paper. Atomic resolution STM images show that 90%-95% of the surface has a near-trigonal structure with a = b = 0.24 nm and an a-b angle of 65{degree}. The remaining 5%-10% of the surface consists of a new orthorhombic structure with a = b = 0.40 nm. Spatially resolved STS measurements further demonstrate that regions with the 0.24 nm period structure are metallic, while areas with the 0.40 nm period structure are semiconducting.
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5286804
- Journal Information:
- Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States), Journal Name: Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States) Vol. 9:2; ISSN 0734-211X; ISSN JVTBD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
360107 -- Metals & Alloys-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MATHEMATICS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTROSCOPY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THALLIUM COMPOUNDS
THALLIUM OXIDES
TOPOLOGY
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
360107 -- Metals & Alloys-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MATHEMATICS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTROSCOPY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THALLIUM COMPOUNDS
THALLIUM OXIDES
TOPOLOGY
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT