Scanning tunneling microscopy/scanning tunneling spectroscopy of the organic superconductors (TNTSF) sub 2 -PF sub 6 and (TMTSF) sub 2 -ClO sub 4

Journal Article · · Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States)

OSTI ID:5160996

Fainchtein, R; Murphy, J C ^[1]

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1. John Hopkins Univ., Laurel, MD (United States)

This paper reports on direct observations of the organic superconductors (tetramethyltetraselenafulvalene) (TMTSF){sub 2}-PF{sub 6} and (TMTSF){sub 2}-ClO{sub 4} made in air at room temperature. The samples consisted of single crystals electrochemically grown. Images revealing the molecular structural arrangement along different crystallographic orientations will be presented as well as spectroscopic data related to the electronic density of states. The images reveal a structure made up of flat molecules that stack on top of one another to form columns and are responsible for the quasi-one-dimensional nature of the electrical conductivity. Although both materials have similar crystal structure the differences in the symmetry and orientation of the counter anions are not resolved. Tunneling spectroscopy data at room temperature shows no apparent difference in the electronic density of states of both materials.

• OSTI ID: 5160996
• 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

Related Subjects

36 MATERIALS SCIENCE
ORGANIC SUPERCONDUCTORS
CRYSTAL STRUCTURE
TMTSF
AIR
AMBIENT TEMPERATURE
MICROSCOPY
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
SPECTROSCOPY
TUNNELING
FLUIDS
GASES
HETEROCYCLIC COMPOUNDS
SELENIUM COMPOUNDS
SUPERCONDUCTORS
360602* - Other Materials- Structure & Phase Studies
360607 - Other Materials- Superconducting Properties- (1992-)