Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 76, Issue 11, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.76.113702
Keywords
alpha-(BEDT-TTF)(2)I-3; charge ordering; quasi-two-dimensional organic conductor; synchrotron radiation; crystal structure analysis
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The spatial charge arrangement of a typical quasi-two-dimensional organic conductor alpha-(BEDT-TTF)(2)I-3 is revealed by single crystal structure analysis using synchrotron radiation. The results show that the horizontal-stripe-type structure, which was suggested by the mean field theory, is established. We also find the charge disproportionation above the metal-insulator transition temperature and a significant change in the transfer integrals caused by the phase transition. Our result elucidates the insulating phase of this material as the 2k(F) charge density localization.
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