Matches in SemOpenAlex for { <https://semopenalex.org/work/W1967861292> ?p ?o ?g. }
- W1967861292 abstract "We report on the anisotropic response, the charge and lattice dynamics of normal and charge-ordered phases with horizontal stripes in single crystals of the organic conductor alpha-(BEDT-TTF)2I3 determined by dc resistivity, dielectric and optical spectroscopy. An overdamped Drude response and a small conductivity anisotropy observed in optics is consistent with a weakly temperature dependent dc conductivity and anisotropy at high temperatures. The splitting of the molecular vibrations nu27(Bu) evidences the abrupt onset of static charge order below TCO=136 K. The drop of optical conductivity measured within the ab plane of the crystal is characterized by an isotropic gap that opens of approximately 75 meV with several phonons becoming pronounced below. Conversely, the dc conductivity anisotropy rises steeply, attaining at 50 K a value 25 times larger than at high temperatures. The dielectric response within this plane reveals two broad relaxation modes of strength Deltaepsilon_LD ~= 5000 and Deltaepsilon_SD ~= 400, centered at 1 kHz < f_LD < 100 MHz and f_SD ~= 1 MHz. The anisotropy of the large-mode (LD) mean relaxation time closely follows the temperature behavior of the respective dc conductivity ratio. We argue that this phason-like excitation is best described as a long-wavelength excitation of a 2kF bond-charge density wave expected theoretically for layered quarter-filled electronic systems with horizontal stripes. Conversely, based on the theoretically expected ferroelectric-like nature of the charge-ordered phase, we associate the small-mode (SD) relaxation with the motion of domain-wall pairs, created at the interface between two types of domains, along the a and b axes. We also consider other possible theoretical interpretations and discuss their limitations." @default.
- W1967861292 created "2016-06-24" @default.
- W1967861292 creator A5000241259 @default.
- W1967861292 creator A5005478445 @default.
- W1967861292 creator A5027244532 @default.
- W1967861292 creator A5036303983 @default.
- W1967861292 creator A5049168689 @default.
- W1967861292 creator A5063210903 @default.
- W1967861292 creator A5067771973 @default.
- W1967861292 creator A5077971823 @default.
- W1967861292 date "2011-04-27" @default.
- W1967861292 modified "2023-10-14" @default.
- W1967861292 title "Electrodynamic response of the charge ordering phase: Dielectric and optical studies of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>α</mml:mi></mml:mrow></mml:math>-(BEDT-TTF)<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>I<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml…" @default.
- W1967861292 cites W1495414064 @default.
- W1967861292 cites W1533046663 @default.
- W1967861292 cites W1631578966 @default.
- W1967861292 cites W1665674172 @default.
- W1967861292 cites W1887444030 @default.
- W1967861292 cites W1964250117 @default.
- W1967861292 cites W1965861100 @default.
- W1967861292 cites W1968470926 @default.
- W1967861292 cites W1972237709 @default.
- W1967861292 cites W1972685078 @default.
- W1967861292 cites W1973984009 @default.
- W1967861292 cites W1974681600 @default.
- W1967861292 cites W1975446191 @default.
- W1967861292 cites W1978802770 @default.
- W1967861292 cites W1979043622 @default.
- W1967861292 cites W1979356490 @default.
- W1967861292 cites W1982330739 @default.
- W1967861292 cites W1987840180 @default.
- W1967861292 cites W1988956322 @default.
- W1967861292 cites W1989895036 @default.
- W1967861292 cites W1990482741 @default.
- W1967861292 cites W1991358823 @default.
- W1967861292 cites W1991916954 @default.
- W1967861292 cites W1997367842 @default.
- W1967861292 cites W1998352895 @default.
- W1967861292 cites W2000013471 @default.
- W1967861292 cites W2002821861 @default.
- W1967861292 cites W2006128577 @default.
- W1967861292 cites W2009601131 @default.
- W1967861292 cites W2010883922 @default.
- W1967861292 cites W2014057916 @default.
- W1967861292 cites W2021545279 @default.
- W1967861292 cites W2028220970 @default.
- W1967861292 cites W2029751112 @default.
- W1967861292 cites W2039176372 @default.
- W1967861292 cites W2042128839 @default.
- W1967861292 cites W2050072505 @default.
- W1967861292 cites W2050516877 @default.
- W1967861292 cites W2052821372 @default.
- W1967861292 cites W2058195899 @default.
- W1967861292 cites W2059716647 @default.
- W1967861292 cites W2065834355 @default.
- W1967861292 cites W2069875401 @default.
- W1967861292 cites W2077555648 @default.
- W1967861292 cites W2081346454 @default.
- W1967861292 cites W2082241723 @default.
- W1967861292 cites W2084219762 @default.
- W1967861292 cites W2084411613 @default.
- W1967861292 cites W2085736866 @default.
- W1967861292 cites W2086481540 @default.
- W1967861292 cites W2087444257 @default.
- W1967861292 cites W2089649710 @default.
- W1967861292 cites W2091286255 @default.
- W1967861292 cites W2092612692 @default.
- W1967861292 cites W2095550246 @default.
- W1967861292 cites W2098030772 @default.
- W1967861292 cites W2113062228 @default.
- W1967861292 cites W2118848791 @default.
- W1967861292 cites W2132320173 @default.
- W1967861292 cites W2152067586 @default.
- W1967861292 cites W2166292993 @default.
- W1967861292 cites W2171199730 @default.
- W1967861292 cites W2222517232 @default.
- W1967861292 cites W2322771215 @default.
- W1967861292 cites W2952509608 @default.
- W1967861292 cites W2992726982 @default.
- W1967861292 cites W3081918458 @default.
- W1967861292 cites W4299514052 @default.
- W1967861292 doi "https://doi.org/10.1103/physrevb.83.165128" @default.
- W1967861292 hasPublicationYear "2011" @default.
- W1967861292 type Work @default.
- W1967861292 sameAs 1967861292 @default.
- W1967861292 citedByCount "71" @default.
- W1967861292 countsByYear W19678612922012 @default.
- W1967861292 countsByYear W19678612922013 @default.
- W1967861292 countsByYear W19678612922014 @default.
- W1967861292 countsByYear W19678612922015 @default.
- W1967861292 countsByYear W19678612922016 @default.
- W1967861292 countsByYear W19678612922017 @default.
- W1967861292 countsByYear W19678612922018 @default.
- W1967861292 countsByYear W19678612922019 @default.
- W1967861292 countsByYear W19678612922020 @default.
- W1967861292 countsByYear W19678612922021 @default.
- W1967861292 countsByYear W19678612922022 @default.
- W1967861292 countsByYear W19678612922023 @default.
- W1967861292 crossrefType "journal-article" @default.
- W1967861292 hasAuthorship W1967861292A5000241259 @default.