Matches in SemOpenAlex for { <https://semopenalex.org/work/W2042128839> ?p ?o ?g. }
- W2042128839 abstract "We have measured the current-voltage $(Itext{ensuremath{-}}V)$ characteristics, dielectric properties, and magnetoresistances of insulating layered organic crystals $ensuremath{theta}text{ensuremath{-}}{(text{BEDT-TTF})}_{2}Mtext{Zn}{(text{SCN})}_{4}$ $(M=text{Cs},text{Rb})$, in which electron-electron Coulomb interactions are considered to induce charge ordering. The in-plane $Itext{ensuremath{-}}V$ characteristics follow the power law with a large exponent that exceeds 10 in the low-temperature limit. The nonlinear $Itext{ensuremath{-}}V$ characteristics are attributed to electric field induced unbinding of pairs of an electron and a hole that are thermally excited and attracted to each other due to two-dimensional long-range Coulomb interaction. The temperature and frequency dependences of the in-plane dielectric constant for $M=text{Cs}$ are explained by the polarization of the electron-hole bound pairs, consistently with the $Itext{ensuremath{-}}V$ characteristics. The large dielectric anisotropy ($ensuremath{approx}100$ at 0.6 K) observed for $M=text{Cs}$ suggests two-dimensional long-range Coulomb interaction, which is also consistent with the explanation of the nonlinear $Itext{ensuremath{-}}V$ curves. The organic crystals have a large positive magnetoresistance ratio, e.g., $ensuremath{approx}10text{ }000mathrm{%}$ for $M=text{Cs}$ in a magnetic field of 10 T at 0.1 K. The magnetoresistance is nearly independent of the magnetic field orientation despite the highly two-dimensional charge transport, indicating that it is electron-spin related. The magnetoresistance may be caused by magnetic field induced parallel alignment of spins of mobile and localized electrons, both in the highest occupied molecular orbital of a BEDT-TTF molecule, and by the resulting suppression of conduction due to the Pauli exclusion principle." @default.
- W2042128839 created "2016-06-24" @default.
- W2042128839 creator A5002222866 @default.
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- W2042128839 creator A5036867271 @default.
- W2042128839 creator A5045470282 @default.
- W2042128839 creator A5074765603 @default.
- W2042128839 creator A5081247340 @default.
- W2042128839 date "2010-06-11" @default.
- W2042128839 modified "2023-10-02" @default.
- W2042128839 title "Charge transport in charge-ordered layered crystals<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>θ</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>BEDT-TTF</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mi>M</mml:mi><mml:mtext>Zn</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>SCN</mml:mtext></mml:mrow><mml:mo>)</mml:…" @default.
- W2042128839 cites W116022914 @default.
- W2042128839 cites W120296536 @default.
- W2042128839 cites W1506229080 @default.
- W2042128839 cites W1541668824 @default.
- W2042128839 cites W1605892463 @default.
- W2042128839 cites W1751238960 @default.
- W2042128839 cites W1965245884 @default.
- W2042128839 cites W1965522499 @default.
- W2042128839 cites W1967393072 @default.
- W2042128839 cites W1971898037 @default.
- W2042128839 cites W1972685078 @default.
- W2042128839 cites W1972939078 @default.
- W2042128839 cites W1973313943 @default.
- W2042128839 cites W1973655435 @default.
- W2042128839 cites W1976159830 @default.
- W2042128839 cites W1978141709 @default.
- W2042128839 cites W1981516908 @default.
- W2042128839 cites W1986422441 @default.
- W2042128839 cites W1987024341 @default.
- W2042128839 cites W1987824124 @default.
- W2042128839 cites W1988895044 @default.
- W2042128839 cites W1992131858 @default.
- W2042128839 cites W1998352895 @default.
- W2042128839 cites W2000090185 @default.
- W2042128839 cites W2001731685 @default.
- W2042128839 cites W2002311048 @default.
- W2042128839 cites W2003901892 @default.
- W2042128839 cites W2003996719 @default.
- W2042128839 cites W2005170596 @default.
- W2042128839 cites W2005999041 @default.
- W2042128839 cites W2008919109 @default.
- W2042128839 cites W2009601131 @default.
- W2042128839 cites W2010668885 @default.
- W2042128839 cites W2011875499 @default.
- W2042128839 cites W2019169206 @default.
- W2042128839 cites W2023406872 @default.
- W2042128839 cites W2030551143 @default.
- W2042128839 cites W2031882613 @default.
- W2042128839 cites W2032797652 @default.
- W2042128839 cites W2033100745 @default.
- W2042128839 cites W2034526526 @default.
- W2042128839 cites W2037061674 @default.
- W2042128839 cites W2043381329 @default.
- W2042128839 cites W2044968727 @default.
- W2042128839 cites W2049594299 @default.
- W2042128839 cites W2049995543 @default.
- W2042128839 cites W2050072578 @default.
- W2042128839 cites W2050709464 @default.
- W2042128839 cites W2051940674 @default.
- W2042128839 cites W2053669683 @default.
- W2042128839 cites W2054215141 @default.
- W2042128839 cites W2056379864 @default.
- W2042128839 cites W2056748589 @default.
- W2042128839 cites W2058680001 @default.
- W2042128839 cites W2062063812 @default.
- W2042128839 cites W2062167916 @default.
- W2042128839 cites W2062911534 @default.
- W2042128839 cites W2065917161 @default.
- W2042128839 cites W2068356971 @default.
- W2042128839 cites W2070848889 @default.
- W2042128839 cites W2071873838 @default.
- W2042128839 cites W2077797095 @default.
- W2042128839 cites W2078367279 @default.
- W2042128839 cites W2081099428 @default.
- W2042128839 cites W2081896133 @default.
- W2042128839 cites W2083589435 @default.
- W2042128839 cites W2084217320 @default.
- W2042128839 cites W2086310394 @default.
- W2042128839 cites W2086481540 @default.
- W2042128839 cites W2086860422 @default.
- W2042128839 cites W2087484358 @default.
- W2042128839 cites W2089198714 @default.
- W2042128839 cites W2089536905 @default.
- W2042128839 cites W2090337860 @default.
- W2042128839 cites W2090660145 @default.
- W2042128839 cites W2090968855 @default.
- W2042128839 cites W2093278276 @default.
- W2042128839 cites W2094071590 @default.
- W2042128839 cites W2127003742 @default.
- W2042128839 cites W2128544703 @default.
- W2042128839 cites W2129338711 @default.
- W2042128839 cites W2147234479 @default.
- W2042128839 cites W2161926132 @default.
- W2042128839 cites W2307563393 @default.
- W2042128839 cites W2314448055 @default.
- W2042128839 cites W2322033815 @default.
- W2042128839 cites W2963474068 @default.
- W2042128839 cites W3101041562 @default.