4.5 Article Proceedings Paper

Order-disorder type of charge-ordering phase transition in narrow-bandwidth compound, alpha '-(BEDT-TTF)(2)IBr2

期刊

PHYSICA B-CONDENSED MATTER
卷 405, 期 11, 页码 S232-S236

出版社

ELSEVIER
DOI: 10.1016/j.physb.2010.01.082

关键词

Organic conductors; Charge ordering; Order-disorder transition; Far-infrared spectrum; Infrared and Raman spectra

资金

  1. Grants-in-Aid for Scientific Research [21550141] Funding Source: KAKEN

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The kinetic energy of alpha'-(BEDT-TTF)(2)IBr2 alpha-(BEDT-TTF)(2)I-3 and alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4) was estimated from the room-temperature optical conductivity measured from 50 to 30 000 cm(-1) The kinetic energy of alpha-(BEDT-TTF)(2)IBr2 was significantly smaller than that of alpha-(BEDT-TTF)(2)I-3 that shows metal-insulator phase transition A clear hysteresis was found in the magnetic susceptibility near the phase transition at around 30 K (C) 2010 Elsevier B V All rights reserved

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