Observation of thin film of one-dimensional organic conductor tetrathiofulvalene tetracyanoquinodimethane by means of atomic force microscopy

Ken Nakajima, Masami Kageshima, Norihiko Ara, Masamichi Yoshimura, Akira Kawazu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Thin films of the charge transfer complex of tetrathiofulvalene tetracyanoquinodimethane (TTF-TCNQ) deposited on KC1 and KBr were studied by atomic force microscopy (AFM). Structures corresponding to the molecular arrangement of the crystallographic ab-plane were observed in the molecular-scale AFM images. Large-scale imaging (15×15 μm) revealed that the films consist of rectangular islands whose longer sides (corresponding to the highly conductive b-axis) orient in the [110] or [1̄10] direction of the KC1 and KBr(001) surfaces. A small number of islands rotated 32°from the [110] direction were also observed on the KBr substrate. The arrangement of these islands can be explained by considering the adsorption of a TCNQ molecule to the metastable state.

Original languageEnglish
Pages (from-to)1892-1894
Number of pages3
JournalApplied Physics Letters
Volume62
Issue number16
DOIs
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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