Matches in SemOpenAlex for { <https://semopenalex.org/work/W2064100930> ?p ?o ?g. }
- W2064100930 endingPage "1346" @default.
- W2064100930 startingPage "1291" @default.
- W2064100930 abstract "This paper reviews charge ordering in the organic conductors, β″-(BEDT-TTF) (TCNQ), θ-(BEDT-TTF)2X, and α-(BEDT-TTF)2X. Here, BEDT-TTF and TCNQ represent bis(ethylenedithio)tetrathiafulvalene and 7,7,8,8-tetracyanoquinodimethane, respectively. These compounds, all of which have a quarter-filled band, were evaluated using infrared and Raman spectroscopy in addition to optical conductivity measurements. It was found that β″-(BEDT-TTF)(TCNQ) changes continuously from a uniform metal to a charge-ordered metal with increasing temperature. Although charge disproportionation was clearly observed, long-range charge order is not realized. Among six θ-type salts, four compounds with a narrow band show the metal-insulator transition. However, they maintain a large amplitude of charge order (Δρ~0.6) in both metallic and insulating phases. In the X = CsZn(SCN)4 salt with intermediate bandwidth, the amplitude of charge order is very small (Δρ < 0.07) over the whole temperature range. However, fluctuation of charge order is indicated in the Raman spectrum and optical conductivity. No indication of the fluctuation of charge order is found in the wide band X = I3 salt. In α-(BEDT-TTF)2I3 the amplitude of charge order changes discontinuously from small amplitude at high temperature to large amplitude (Δρmax~0.6) at low temperature. The long-range charge-ordered state shows ferroelectric polarization with fast optical response. The fluctuation of multiple stripes occurs in the high-temperature metallic phase. Among α-(BEDT-TTF)2MHg(SCN)4 (X = NH4, K, Rb, Tl), the fluctuation of charge order is indicated only in the X = NH4 salt. α′-(BEDT-TTF)2IBr2 shows successive phase transitions to the ferroelectric state keeping a large amplitude of charge order (Δρmax~0.8) over the whole temperature range. It was found that the amplitude and fluctuation of charge order in these compounds is enhanced as the kinetic energy (bandwidth) decreases." @default.
- W2064100930 created "2016-06-24" @default.
- W2064100930 creator A5000648624 @default.
- W2064100930 date "2012-09-18" @default.
- W2064100930 modified "2023-10-14" @default.
- W2064100930 title "Infrared and Raman Studies of Charge Ordering in Organic Conductors, BEDT-TTF Salts with Quarter-Filled Bands" @default.
- W2064100930 cites W1506229080 @default.
- W2064100930 cites W1533046663 @default.
- W2064100930 cites W1539185527 @default.
- W2064100930 cites W1596845954 @default.
- W2064100930 cites W1605892463 @default.
- W2064100930 cites W1631578966 @default.
- W2064100930 cites W1665674172 @default.
- W2064100930 cites W1670210453 @default.
- W2064100930 cites W1678355380 @default.
- W2064100930 cites W1751238960 @default.
- W2064100930 cites W1964271839 @default.
- W2064100930 cites W1965215581 @default.
- W2064100930 cites W1965861100 @default.
- W2064100930 cites W1967181782 @default.
- W2064100930 cites W1967861292 @default.
- W2064100930 cites W1968071000 @default.
- W2064100930 cites W1972685078 @default.
- W2064100930 cites W1973655435 @default.
- W2064100930 cites W1974117818 @default.
- W2064100930 cites W1976544219 @default.
- W2064100930 cites W1976642745 @default.
- W2064100930 cites W1977289260 @default.
- W2064100930 cites W1979043622 @default.
- W2064100930 cites W1979851701 @default.
- W2064100930 cites W1981405405 @default.
- W2064100930 cites W1981516908 @default.
- W2064100930 cites W1982330739 @default.
- W2064100930 cites W1982943211 @default.
- W2064100930 cites W1986422441 @default.
- W2064100930 cites W1986984296 @default.
- W2064100930 cites W1987024341 @default.
- W2064100930 cites W1988895044 @default.
- W2064100930 cites W1990482741 @default.
- W2064100930 cites W1991107246 @default.
- W2064100930 cites W1991889828 @default.
- W2064100930 cites W1991916954 @default.
- W2064100930 cites W1992354766 @default.
- W2064100930 cites W1994541817 @default.
- W2064100930 cites W1994875931 @default.
- W2064100930 cites W1994911596 @default.
- W2064100930 cites W1995231834 @default.
- W2064100930 cites W1995498301 @default.
- W2064100930 cites W1996258328 @default.
- W2064100930 cites W1998982101 @default.
- W2064100930 cites W1999546975 @default.
- W2064100930 cites W2000013471 @default.
- W2064100930 cites W2000090185 @default.
- W2064100930 cites W2000309240 @default.
- W2064100930 cites W2000681502 @default.
- W2064100930 cites W2002821861 @default.
- W2064100930 cites W2004111954 @default.
- W2064100930 cites W2004166330 @default.
- W2064100930 cites W2004449946 @default.
- W2064100930 cites W2014057916 @default.
- W2064100930 cites W2015423453 @default.
- W2064100930 cites W2016468521 @default.
- W2064100930 cites W2017880438 @default.
- W2064100930 cites W2018346271 @default.
- W2064100930 cites W2018515827 @default.
- W2064100930 cites W2019603236 @default.
- W2064100930 cites W2021376158 @default.
- W2064100930 cites W2022962816 @default.
- W2064100930 cites W2024912257 @default.
- W2064100930 cites W2026409648 @default.
- W2064100930 cites W2027108284 @default.
- W2064100930 cites W2027795108 @default.
- W2064100930 cites W2028948785 @default.
- W2064100930 cites W2029751112 @default.
- W2064100930 cites W2031552786 @default.
- W2064100930 cites W2034508222 @default.
- W2064100930 cites W2034555969 @default.
- W2064100930 cites W2035642329 @default.
- W2064100930 cites W2037309160 @default.
- W2064100930 cites W2037599764 @default.
- W2064100930 cites W2037951587 @default.
- W2064100930 cites W2043381329 @default.
- W2064100930 cites W2045749600 @default.
- W2064100930 cites W2046482691 @default.
- W2064100930 cites W2049594299 @default.
- W2064100930 cites W2050072505 @default.
- W2064100930 cites W2050873820 @default.
- W2064100930 cites W2051940674 @default.
- W2064100930 cites W2053850553 @default.
- W2064100930 cites W2053985958 @default.
- W2064100930 cites W2056557458 @default.
- W2064100930 cites W2056748589 @default.
- W2064100930 cites W2057918635 @default.
- W2064100930 cites W2058168224 @default.
- W2064100930 cites W2059682246 @default.
- W2064100930 cites W2059716647 @default.
- W2064100930 cites W2060056689 @default.
- W2064100930 cites W2063586660 @default.