FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1991380583> ?p ?o ?g. }

• W1991380583 endingPage "8118" @default.
• W1991380583 startingPage "8108" @default.
• W1991380583 abstract "Electrical transport has been investigated in amorphous ${mathrm{Y}}_{0.19}{mathrm{Si}}_{0.81},$ from 30 mK to room temperature. Below 2 K, the conductance G exhibits Shklovskii-Efros behavior $Gensuremath{sim}mathrm{exp}[ensuremath{-}{(T}_{0}{/T)}^{1/2}]$ at zero electric field, where conduction is expected to occur along a very sinuous path (isotropic percolation). The nonlinear $Iensuremath{-}V$ characteristics are systematically studied up to very high fields, for which the conductance no longer depends on T and for which the current paths are expected to be almost straight (directed percolation). We show that the contributions of electronic and sample heating to those nonlinearities are negligible. Then, we show that the conductance dependence as a function of low electric fields $(F/T<5000mathrm{V}{mathrm{m}}^{ensuremath{-}1}{mathrm{K}}^{ensuremath{-}1})$ is given by $G(F,T)=G(0,T)mathrm{exp}(ensuremath{-}{eFL/k}_{B}T).$ The order of magnitude (5--10 nm) and the T dependence $(ensuremath{sim}{T}^{ensuremath{-}1/2})$ of L agree with theoretical predictions. From the ${T}_{0}$ value and the length characterizing the intermediate field regime, we extract an estimate of the dielectric constant of our system. The very high electric field data do not agree with the prediction $I(F)ensuremath{sim}mathrm{exp}[ensuremath{-}{(F}_{0}{/F)}^{{ensuremath{gamma}}^{ensuremath{'}}}]$ with ${ensuremath{gamma}}^{ensuremath{'}}=1/2:$ we find a F dependence of ${ensuremath{gamma}}^{ensuremath{'}}$ that could be partly due to tunneling across the mobility edge. In the intermediate electric field domain, we claim that our data show both the enhancement of the hopping probability with the field and the influence of the straightening of the paths. The latter effect is due to the gradual transition from isotropic to directed percolation and depends essentially on the statistical properties of the ``returns,'' i.e., of the segments of the paths where the current flows against the electrical force. The critical exponent of this returns contribution, which up to now was unknown both theoretically and experimentally, is found to be $ensuremath{beta}=1.15ifmmodepmelsetextpmfi{}0.10.$ An estimation of the length of the returns is also given." @default.
• W1991380583 created "2016-06-24" @default.
• W1991380583 creator A5016813436 @default.
• W1991380583 creator A5022918056 @default.
• W1991380583 creator A5052389156 @default.
• W1991380583 date "2000-03-15" @default.
• W1991380583 modified "2023-10-18" @default.
• W1991380583 title "Non-Ohmic hopping transport in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>a</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant=normal>YSi</mml:mi></mml:math>: From isotropic to directed percolation" @default.
• W1991380583 cites W1837863733 @default.
• W1991380583 cites W1966743689 @default.
• W1991380583 cites W1972601869 @default.
• W1991380583 cites W1974108979 @default.
• W1991380583 cites W1975220060 @default.
• W1991380583 cites W1976431068 @default.
• W1991380583 cites W1979651495 @default.
• W1991380583 cites W1980416451 @default.
• W1991380583 cites W1982204465 @default.
• W1991380583 cites W1983395651 @default.
• W1991380583 cites W1988420406 @default.
• W1991380583 cites W1990366790 @default.
• W1991380583 cites W1991241975 @default.
• W1991380583 cites W1994020441 @default.
• W1991380583 cites W2003437581 @default.
• W1991380583 cites W2006215796 @default.
• W1991380583 cites W2007932413 @default.
• W1991380583 cites W2008940517 @default.
• W1991380583 cites W2012579004 @default.
• W1991380583 cites W2019818539 @default.
• W1991380583 cites W2023736106 @default.
• W1991380583 cites W2023842461 @default.
• W1991380583 cites W2025863444 @default.
• W1991380583 cites W2027360959 @default.
• W1991380583 cites W2030126373 @default.
• W1991380583 cites W2031868097 @default.
• W1991380583 cites W2032027655 @default.
• W1991380583 cites W2035588905 @default.
• W1991380583 cites W2035711661 @default.
• W1991380583 cites W2037485176 @default.
• W1991380583 cites W2038215610 @default.
• W1991380583 cites W2044649823 @default.
• W1991380583 cites W2047749022 @default.
• W1991380583 cites W2048931140 @default.
• W1991380583 cites W2049247841 @default.
• W1991380583 cites W2054767328 @default.
• W1991380583 cites W2055419822 @default.
• W1991380583 cites W2056009956 @default.
• W1991380583 cites W2063850090 @default.
• W1991380583 cites W2067511285 @default.
• W1991380583 cites W2069431947 @default.
• W1991380583 cites W2071204658 @default.
• W1991380583 cites W2072473985 @default.
• W1991380583 cites W2080578484 @default.
• W1991380583 cites W2081571880 @default.
• W1991380583 cites W2083004416 @default.
• W1991380583 cites W2083917921 @default.
• W1991380583 cites W2084221032 @default.
• W1991380583 cites W2085000833 @default.
• W1991380583 cites W2086497680 @default.
• W1991380583 cites W2087003320 @default.
• W1991380583 cites W2087375600 @default.
• W1991380583 cites W2087621790 @default.
• W1991380583 cites W2088354268 @default.
• W1991380583 cites W2090272917 @default.
• W1991380583 cites W2090667865 @default.
• W1991380583 cites W2105211675 @default.
• W1991380583 cites W2264002775 @default.
• W1991380583 cites W4244533210 @default.
• W1991380583 doi "https://doi.org/10.1103/physrevb.61.8108" @default.
• W1991380583 hasPublicationYear "2000" @default.
• W1991380583 type Work @default.
• W1991380583 sameAs 1991380583 @default.
• W1991380583 citedByCount "13" @default.
• W1991380583 countsByYear W19913805832012 @default.
• W1991380583 countsByYear W19913805832013 @default.
• W1991380583 countsByYear W19913805832014 @default.
• W1991380583 countsByYear W19913805832015 @default.
• W1991380583 countsByYear W19913805832022 @default.
• W1991380583 countsByYear W19913805832023 @default.
• W1991380583 crossrefType "journal-article" @default.
• W1991380583 hasAuthorship W1991380583A5016813436 @default.
• W1991380583 hasAuthorship W1991380583A5022918056 @default.
• W1991380583 hasAuthorship W1991380583A5052389156 @default.
• W1991380583 hasBestOaLocation W19913805832 @default.
• W1991380583 hasConcept C10138342 @default.
• W1991380583 hasConcept C121332964 @default.
• W1991380583 hasConcept C121932024 @default.
• W1991380583 hasConcept C162324750 @default.
• W1991380583 hasConcept C182306322 @default.
• W1991380583 hasConcept C26873012 @default.
• W1991380583 hasConcept C60799052 @default.
• W1991380583 hasConcept C62520636 @default.
• W1991380583 hasConceptScore W1991380583C10138342 @default.
• W1991380583 hasConceptScore W1991380583C121332964 @default.
• W1991380583 hasConceptScore W1991380583C121932024 @default.
• W1991380583 hasConceptScore W1991380583C162324750 @default.
• W1991380583 hasConceptScore W1991380583C182306322 @default.
• W1991380583 hasConceptScore W1991380583C26873012 @default.
• W1991380583 hasConceptScore W1991380583C60799052 @default.

• next