Surface structure studies of quasi-one-dimensional charge-density wave compounds by scanning tunneling microscopy
- Univ. of Illinois, Urbana (United States)
This paper reports on the use of scanning tunneling microscopy (STM) to study the atomic and charge-density wave (CDW) structure of the surface of the trichalcogenides NbSe{sub 3} and o-TaS{sub 3}. Atomic images of NbSe{sub 3} suggest the presence of an adatom on untreated surfaces imaged in air, making chain identification difficult. Although the detailed structure of o-TaS{sub 3} is not known, STM images provide evidence that it is more closely related to the ZrSe{sub 3} structure than to that of NbSe{sub 3}, as previously assumed. Images of o-TaS{sub 3} below T{sub p} = 215 K reveal the detailed structure of the CDW, yielding some insight as to why its CDW properties differ from those of NbSe{sub 3} and m-TaS{sub 3}.
- OSTI ID:
- 5186917
- Journal Information:
- Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States), Vol. 9:2; ISSN 0734-211X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NIOBIUM SELENIDES
CHARGE DENSITY
ELECTRONIC STRUCTURE
TANTALUM SULFIDES
MICROSCOPY
TOPOLOGY
TUNNEL EFFECT
CHALCOGENIDES
MATHEMATICS
NIOBIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360606* - Other Materials- Physical Properties- (1992-)